Birkat Cohanim

From Halachipedia
Revision as of 04:12, 24 April 2013 by YitzchakSultan (talk | contribs) (Text replace - "Talit" to "Talit")

Birkat kohanim.jpg

The Mitzvah of Birkat Cohanim nowadays

  1. The Mitzvah of Birkat Cohanim is biblical (Deoritta) even nowadays, in all places at all times. [1] It is based on the pasuk "דַּבֵּר אֶל-אַהֲרֹן וְאֶל-בָּנָיו לֵאמֹר, כֹּה תְבָרְכוּ אֶת-בְּנֵי יִשְׂרָאֵל: אָמוֹר, לָהֶם" meaning "Speak to Aaron and his sons, saying: This is how you must bless the Israelites". [2]
  2. The Mitzvah isn’t strictly obligatory, but rather a Mitzvah which is an opportunity to fulfill a positive command similar to Tzitzit. [3]
  3. The Ashkenazic minhag outside Israel is not to do Birkat Cohanim except at Mussaf of Yom Tov because Birkat Cohanim should be done when people are relaxed and not bothered by work. [4] Throughout Jewish history, some have made a great effort to change this minhag (in order to fulfill this biblical Mitzvah) and were unsuccessful. [5]
  4. Some have the practice not do Birkat Cohanim when Yom Tov falls out on Shabbat, however, the poskim strongly disapprove of this and urge to discontinue this practice without causing conflict. [6]

Upon whom is the mitzvah of Birkat Cohanim?

  1. Most rabbinic authorities assume that the mitzvah is upon the Cohanim while a minority opinion assumes that there’s a mitzvah both upon the Cohanim and the Yisraelim who are being blessed. [7]
  2. If a Cohen is in shul and isn’t called up to do the Birkat Cohanim, strictly he isn’t obligated to do Birkat Cohanim (certainly, it’s appropriate and correct to do so) however, once a Cohen is asked to do Birkat Cohanim he violates the biblical command by refusing. [8]
  3. When a Cohen goes up to bless the congregation, it is as if the Cohen is also being blessed. [9]

When is Birkat Cohanim said?

  1. Birkat Cohanim is done in Shacharit, Musaf, and Ne'ilah. It is not done during Mincha because perhaps the Cohen drank wine, and a Cohen who is intoxicated may not do Birkat Cohanim. [10]
  2. Therefore, during a fast day which doesn't have Ne'ilah (like Tish'a B'av (the ninth of av) or Shiv'a Asar B'tamuz (The 17th of Tamuz) we do birkat Cohanim during mincha, since we are not worried about the Cohanim being intoxicated if they are fasting. [11]
  3. There is no Birkat Cohanim at night. [12]
  4. Birkat Cohanim is only said if there is a minyan and the minyan includes the Cohanim. [13]

Procedure of Birkat Cohanim for the Cohanim

  1. Even if there is no platform, the cohanim should still go up to bless the congregation. Therefore, if the one leading the prayers is the only cohen present, he should bless "Birkat Cohanim" from where he is standing, and he doesn't need to move to the platform. [14]
  2. The Cohanim who are going to say Birkat Cohanim must remove their shoes, whether or not they are leather. [15]However, those communities in Chutz LeAretz who have a minhag not to remove their shoes if they say Birkat Cohanim from the floor without going up on the duchan have what to rely on.[16]
  3. When the Cohanim put back on their shoes, they shouldn't touch their shoes. If they touch their shoes, they have to wash Netilat Yadayim.[17]
  4. By the time the Sheliach Tzibur arrives at the blessing of "Retzeh", the Cohanim must make a motion towards doing the mitzvah. If the Sheliach Tzibur finished the blessing of "Retzeh", and said the word "Modim" before a cohen made this motion, that cohen may not go up to do birkat cohanim. [18]
  5. The Cohanim should stand there, facing the heichal, with their backs to the congregation. They hold their fingers closed, against their palms, until the sheliach tzibur completes the blessing of "hatov shimcha". When the shaliach tzibbur calls to them "cohanim", they turn their faces to the people, spread out their fingers, and lift up their hands shoulder high.[19]
  6. If only one Cohen is blessing the people, he should turn around after the shaliach tzibbur finishes the bracha of "hatov shimcha" and begin reciting the blessing alone. Afterwards, the sheliach tzibur says the words of birkat cohanim one word at a time and Cohen repeats each word after the shaliach tzibbur, as explained below.[20]
  7. If there are two or more Cohanim present, they do not begin reciting the blessing until the sheliach tzibur calls them, saying the word “Cohanim”. [21]
  8. One of the measures ordained by Ezra is that the Cohanim should not ascend to the duchan wearing sandals. Rather, they should stand barefoot[22]
  9. If the only cohen in the tzibur is the Sheliach tzibur, and he is using a siddur and will therefor not be confused and will be able to continue in his tefila after birkat cohanim, he should move his feet during the bracha of "Retzeh", and then go do birkat cohanim, so that the tzibur will not miss out on this special blessing. But if there is another cohen who can do birkat cohanim, the sheliach tzibur should not go. [23]
  10. If the sheliach tzibur forgot to do birkat coahanim, and he started the blessing of "Sim Shalom", as long as he did not finish the blessing of "Sim Shalom", if he remembers he can go back. But if he finished the words "Hamevarech et amo yisrael basahalom"(the end of "Sim Shalom"), he can no longer go back. And even though there are those who say that you can do birkat cohanim after the prayers are finished, it is better not to do it. (Safek brachot lehakel- when we have a doubt about blessing we should be lenient, and not say the blessing)[24]
  11. The cohanim should be careful not to continue the next blessing until the congregants have finished saying "Amen".[25]
  12. At the end of birkat Cohanim, the Cohanim should not turn back around (so that their backs are facing the congregation), nor should they put their hands down and close their fingers, until the sheliach tzibur begins the beracha of "Sim Shalom". [26]
  13. The cohanim should not return to their places until the shaliach tzibbur finishes "sim shalom" and some say until the congregation finishes answering Amen.[27]
  14. The Cohanim are not allowed to add any other blessings to the birkat Cohanim.[28] Doing so constitues "Bal Tosif".[29]
  15. When the Cohanim turn their faces to the community to bless them, and when they turn their faces from the community after blessing them, they should turn only to the right. Similarly, any turns which a person makes should always be to the right[30]

Procedure of Birkat Cohanim for the Shaliach Tzibbur

  1. The Sheliach Tzibur should say the words of birkat cohanim one word at a time and the cohen should repeat each word after the shaliach tzibbur. [31]
  2. The Sheliach Tzibbur should say each word to the Cohanim out loud and not quietly. [32] If one of the Cohanim didn’t hear a word (even the name of Hashem), the Sheliach Tzibbur should repeat it out loud. [33]
  3. The sheliach tzibur should not answer "Amen" to the blessings of the Cohanim, like the rest of the congregation, for perhaps he will get confused about which beracha he is up to. [34]However, if the Shaliach Tzibbur is praying from a Siddur and is confident that he won't get confused which bracha he is up to, he may answer Amen after the bracha's of the Cohanim. [35]However, some Sephardim hold that the Sheliach Tzibbur shouldn't answer amen even if he's using a Siddur.[36]
  4. In regards to the Brachat HaMitzvah the Cohanim make prior to Birkat Cohanim, some say that certainly the Shaliach Tzibbur should not answer amen.[37]

Proper behavior of the congregation during Birkat Cohanim

  1. Because of the opinion that there is also a mitzvah for the Yisraelim to receive the Bracha if one is in Shul when the Cohanim were called one may not leave until after Birkat Cohanim. [38] Even if one already heard Birkat Cohanim that day, it's improper to leave the Shul when the Cohanim get up for Birkat Cohanim. [39]
  2. The Tzibbur should stand during Birkat Cohanim and listen to every word with intent. [40] However, a sick or old person may sit during Birkat Cohanim. [41]
  3. If one is slightly behind the Cohanim one is not included in the Bracha, however, if one is standing directly on the side, one is included in the Bracha, yet, one should face the Cohanim. Even if there is a partition - even an iron wall - between the Cohanim and the people who are being blessed, since they are facing the Cohanim, they are included in the blessing.[42]
  4. If one is in front of the Cohanim one should face east (the front of the Shul). [43]
  5. One shouldn’t look at the hands of the Cohanim during Birkat Cohanim but rather one should face downward [44] or cover one’s face with a talit. [45] However, nowadays that the Cohanim wear the Talit over their hands one may look at the Cohanim. [46]
  6. The congregation shouldn't say any pesukim during the Birkat Cohanim. [47]

Answering Amen and Baruch Hu Baruch Shemo

  1. The congregants should answer "Amen" after each of the three berachot said in birkat Cohanim.[48]
  2. The congregants should be careful not to answer "Amen" until the cohanim have finished saying the last word of the pasuk. [49]
  3. There are various opinions regarding whether one should answer Baruch Hu Baruch Shemo after Hashem’s name in Birkat Cohanim. [50]
  4. Someone who’s in middle of Shemoneh Esrei should stop to listen even if one is in front of the Cohanim, however, according to Sephardim one may continue Shemoneh Esrei but if one wants one may stop to listen in between Brachot. [51] If one stopped to listen to Birkat Cohanim one should not answer Amen. [52]

Things that may prevent a Cohen from doing Birkat Cohanim

  1. If a person can not pronounce his letters correctly, for example if he says his "Ayin's" like "Alephs" and his "chet's" like "caf's", he is still allowed to do birkat cohanim, because nowadays that is how everyone pronounces them. However if he happens to be in a place where they are very meticulous about correct pronounciation, he should not do birkat cohanim. There are those who say that if a person is in a place that they are meticulous, but all the people know that this person can not pronounce their letters the "corect" way, or if they pronounce it a different way (for example: if an ashkenazi, who has different letter pronunciations, is in a sephardic shul they all know that he can't pronounce the letters correctly), he may do birkat cohanim. This is the accepted minhag. [53]
  2. Similarly, a stutterer or one who speaks unclearly, whose words cannot be understood by everyone, should not recite birkat Cohanim[54]
  3. A Cohen who has a defect, blemish, or deformity, on his face or his hands should not do birkat cohanim, because the people will look at him and be distracted. However if he is "Dash B'Iro", meaning that he is had a blemish for at least 30 days and the whole tzibur knows that he has this blemish, there is no worry that people will look at him, and he may do birkat cohanim. Nowadays, since the Cohanim cover themselves with a talit during the blessing, there is no worry that people will look at him, and any Cohen who has a blemish on his hands or face may do birkat cohanim. [55]
  4. A Cohen who drank a revi'it of wine at any time should not do birkat Cohanim until the effects of the wine have worn off. [56]
  5. A Cohen who recited the birkat Cohanim and went to another synagogue and found the congregation in the midst of prayer, before birkat Cohanim, should partake in that minyan's birkat Cohanim. A Cohen may recite the birkat Cohanim several times during the day.[57]
  6. If a cohen who already performed birkat cohanim finds himself in another shul which is going to do birkat cohanim, he doesn't violate the biblical commands if he doesn't do birkat cohanim another time. However, if he does do birkat cohanim a second time, he should make a new bracha prior to the birkat cohanim. [58]
  7. A Cohen is forbidden marry a divorcee or a convert. If he does, his child has the title of a "Challal", and this child may not do birkat Cohanim. Him and all his descendents are "Challalim" and may not do Birkat Cohanim (because they are not considered Cohanim).[59]
  8. A sick person who is attatched to a catheter, which holds his urine under his clothing, may do birkat Cohanim as long as his outer clothes are clean, and there is no bad smell coming out of him. [60]

Cohanim washing their hands before Birkat Cohanim

  1. A Cohen with impure hands (i.e. he did not wash his hands) should not do birkat Cohanim.[61]A Cohen who was unable to wash his hands or is sickly and can't go to wash his hands, in extenuating circumstances may rely on the washing he did in the morning. [62]
  2. The kohanim need to wash their entire hands (from the fingertips to the wrist) for birkat kohanim[63], even on Tisha Be’av on which one can’t wash past the knuckles for other reasons. Only Levim who regularly wash their own hands before washing the kohanim’s, can wash on Tisha Be’av before washing the kohanims' hands. [64]
  3. No bracha is made when the Cohanim wash their hands for Birkat Cohanim. However, in order to avoid a situation in which there is a dispute whether one should make a bracha, the Cohanim should be careful not to touch a dirty area from the time they wash Netilat Yadayim upon waking up until Birkat Cohanim.[65]
  4. The Levi is supposed to pour the water upon the hands of the cohanim in order to wash them. If there's no Levi, a firstborn should do it. If there's no firstborn, the cohen should wash his own hands.[66]
  5. The cohanim do not make a bracha for this washing of their hands.[67]

Minhag of thanking Cohanim

  1. There is a minhag that after Birkat Cohanim, the congregants should go to the Cohanim and say "Chazak U'baruch" or "Yashar Koach". Even though they (the Cohanim) were obligated to do what they did, they still could have made themselves exempt by leaving. Therefore, it is fitting to praise them.[68]
  2. At the conclusion of Birkat Cohanim, some have the practice to thank the cohanim for the Brachot and the cohanim respond Tzivku LeMitzvot. However, some authorities advise avoiding having the Cohanim respond these words. [69] However, saying Yasher Koach or thank you isn’t an issue. [70]

Interruptions in middle of Birkat Cohanim

  1. During Birkat Cohanim one shouldn’t make any interruptions even to answer Kaddish or Kedusha. [71]
  2. The Tzibbur shouldn’t say anything during the Birkat Cohanim except for Amen. [72]Sephardim also have the minhag to answer Baruch Hu UBaruch Shemo after hearing Hashem's name in Birkat Cohanim.[73]
  3. The Shaliach Tzibbur shouldn’t answer Amen unless he’s Davening from a Siddur and feels that he won’t loose his place, [74] but to the Bracha of the cohanim before Birkat Cohanim one certainly shouldn’t answer Amen. [75]

Imitating Birkat Cohanim

  1. Some say that a Yisrael may not raise his fingers in the same fashion as the cohanim do for Birkat Cohanim. [76]
  2. If a Yisrael makes the blessing of the cohanim, with the intention of doing the mitzvah, he is transgressing a positive commandment, because only the cohanim were commanded.[77]
  3. However, parents blessing their children and Rabbis blessing their students, may put both of their hands on their heads while reciting the blessing, since the only prohibition is to make the blessing with the intention of fulfilling the mitzvah of the commandment, and to do it like the cohen.[78]
  4. There is no worry about saying a "Bracha levatala", a blessing in vain, since they are verses in the Torah, which are permitted to say.

Sources

  1. Sefer HaChinuch (378), Shaar HaTzion 128:131*, Yalkut Yosef (Tefillah vol 2, pg 217), Shu"t Mishkenot Yaakov 66.
  2. Bamidbar 6:23
  3. Dvar Avraham 1:31
  4. Rama 128:44 writes that the Ashkenazic minhag outside Israel is not to do Birkat Cohanim except at Mussaf of Yom Tov because Birkat Cohanim should be done when people are relaxed and not bothered by work. Kitzur S"A 100:1 agrees. For other reasons to explain the Ashkenazi minhag see Bet Yosef 128 quoting the Sefer Chasidim, Sh”t Zera Emet 3:13, and Sh”t Bet Efraim 6
  5. Aruch HaShulchan 128:64
  6. Mishna Brurah 128:165, Sh”t Igrot Moshe 3:18, 5:15. See also Kitzur S"A 100:1 who quotes the minhag not to say Birkat Cohanim when Yom TOv falls out on Shabbat, but says the minhag to say it on Yom Tov even when it falls out on Shabbat is a more proper minhag.
  7. Biur Halacha 128 intro, Sefer Charedim 12:18, Igrot Moshe 4:21
  8. Biur Halacha 128:4
  9. Mishna Brurah 128:2, Yalkut Yosef, Tefillah Volume 1, page 294
  10. Rambam (Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 1)
  11. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 2
  12. Yalkut Yosef, Tefillah Volume 1, page 339
  13. S"A 128:1, Kitzur S"A 100:2, Mishna Brurah 128:2
  14. Yalkut Yosef, Tefillah Volume 1, page 294
  15. Gemara Sotah 40a writes that Rabbi Yochanan ben Zakai instituted that the Cohanim should not go up wearing sandals or any type of shoe for two reasons: 1) out of respect to the congregation not to go before them with dirty shoes and 2) so that a Cohen doesn't have to tie his shoes during Birkat Cohanim and then appear as if he's a Pasul Cohen. This halacha is codified in Rambam 14:6 and S"A 128:5. Chida in Machzik Bracha 128:7 writes that this halacha applies even to non-leather shoes. Kaf HaChaim 128:28 and Halacha Brurah 128:16 agree.
  16. Yafeh Lelev 128:29 is lenient for Cohanim to wear shoes if they don't go up on the duchan. Although Kaf HaChaim 128:107 disagrees, Halacha Brurah 128:17 says that there's what to rely upon. Yachava Daat 2:13 writes that one who finds it hard not to take off their shoes may rely on the Yafeh Lelev so as not to lose this mitzvah entirely, however, those who want to fulfill mitzvot in the best way should remove thier shoes.
  17. Kitzur S"A 100:16
  18. Yalkut Yosef, Tefillah Volume 1, page 299, Rambam Hilchot Tefillah U'Birkat Cohanim 15:11 based on the gemara in Sota 38b.
  19. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 3, S"A 128:10
  20. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 8, S"A 128:10
  21. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 8, S"A 128:10
  22. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 6
  23. Yalkut Yosef, Tefillah Volume 1, page 311
  24. Yalkut Yosef, Tefillah Volume 1, page 315
  25. Rambam, Mishneh Torah: Hilchot Tefillah U'Bikcat Cohanim, Chapter 14, Halacha 5, S"A 128:13
  26. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 6, S"A 128:16
  27. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 4, S"A 128:16
  28. Gemara Rosh Hashana 28b, Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 12
  29. Deuteronomy (Devarim) 4:2
  30. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 13
  31. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 3, S"A 128:13
  32. Halichot Shlomo 10:15
  33. Halichot Shlomo (pg 133 note 56)
  34. Rambam (Hilchot Tefillah U'Birkat Cohanim 14:5), S"A 128:19
  35. Mishna Brurah 128:71, Kitzur S"A 100:12
  36. Yalkut Yosef (5764 edition, Tefillah vol 2, pp. 360-2)
  37. Mishna Brurah 128:71 quotes some who are strict not to let the Shaliach Tzibbur answer Amen to the birchat hamitzvah made by the cohanim because it would be an interruption to the tefillah. Rav Mordechai Eliyahu (comments on Kitzur S"A 100:14) agrees with that opinion.
  38. Piskei Teshuvot 128:2
  39. Kaf HaChaim 128:149
  40. Mishna Brurah 128:51, Tefillah KeHilchata 14:48
  41. Yalkut Yosef, Tefillah Volume 1, page 298
  42. S”A 128:24, Biur Halacha D”H Aval, Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 15, Halacha 8
  43. Biur Halacha 128:24 D”H Aval
  44. S”A 128:23
  45. Mishna Brurah 128:92, Tefillah KeHilchata 14:49
  46. Siach Tefillah (Shaar 5, 1:2) writes that nowadays that the Cohanim wear the Talit over their hands one may look at the Cohanim. [See also Rav Herschel Schacter’s opinion at yu.edu.] Rabbi Hershel Schachter in a shiur on Birchat Cohanim (min 33-5) explains that if the Cohanim cover their hands with a Talit it's permitted for the congregation to look at the Cohanim (based on S"A 128:23). However, the Piskei Teshuvot 128:55 writes that one should still not look at the Cohanim so as not to get distracted even if the Cohanim cover their hands with a Tallit.
  47. Kitzur S"A 100:13
  48. As such: "Yevarechecha Hashem v'yishmerecha --Amen-- Ya'er Hashem panav elecha v'yichunecha --Amen-- Yisa Hashem panav elecha v'yasem lecha shalom --Amen--. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 3
  49. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 14, Halacha 5, S”A 128:18, Igrot Moshe 2:31
  50. The Weekly Halachah Discussion (Vol 2, pg 379) writes that one may follow one’s customary practice but should do so quietly. See Yachava Daat 4:9.
    • The Gemara Sotah 40a tells us that one shouldn’t say Pesukim while the Cohanim are blessing the people because it’s disrespectful to ignore the blessings being said. This is codified in Shulchan Aruch 128:26. However, this may be different considering that one is involved in Davening and there’s no mitzvah to stop Davening to listen rather the principle of Osek BeMitzvah Patur Min HaMitzvah (one who is involved in a mitzvah should continue that mitzvah) comes into effect.
    • If there’s a mitzvah on the individual Jews receiving the Bracha like the Sefer Charedim 4:18 then it’s understandable that one should pause to hear the Brachot. [This is also the opinion of the Raavad (Mishna Tamid end of chapter 6), Bet Efraim 6, Haflah (Ketubot 24b).] However, the Ritva (Sukkah 31a) writes clearly that the mitzvah is only upon the cohanim and not those being blessed. [This is also the opinion of the Keren Orah (Sotah 39b). The Chatom Sofer 167 writes that this is the opinion of the majority of Rishonim.] If so it’s logical that there’s no reason to stop to listen to Birkat Cohanim since there’s no Mitzvah of to say the Brachot but only to listen.
    • It’s seemingly unanimous (Sh”t Yabea Omer 7:12, Halichot Shlomo 10:3) that even according to those Rishonim (Tosfot Brachot 21b) who disapprove of stopping in Shemoneh Esrei to hear Kedusha because the principle of Shomea KeOnah (listening is like hearing) makes it as if one actually said the words and interrupted one’s prayer, would agree here that it’s not an issue because one has no intent to be considered as if one said the words but rather one is silent in order to receive the blessings.
    • Rav Ovadyah Yosef in Sh”t Yabea Omer 7:12 writes that one doesn’t have to stop in middle of Shemoneh Esrei in order to listen to Birkat Cohanim (based on the above two reasons), however, if one wanted to one should do so in between the Brachot. However, Rav Shlomo Zalman in Halichot Shlomo 10:3 writes that in deference to those who hold that there’s also a mitzvah for those being blessing one should stop to listen.
    • Chazon Ish (Dinim VeHanhagot 4:29), Igrot Moshe 4:21(2), Shevet HaLevi 3:15, and Halichot Shlomo 10:3 (note 18 adds that one should listen from the beginning of the Bracha that the cohanim make before Birkat Cohanim.) all hold that one should stop and listen for Birkat Cohanim. See also Avnei Yishfah (Tefillah pg 205) quoting Rav Elyashiv and Sh”t Teshuvot VeHanhagot 2:77 who say that one shouldn’t stop to listen to Birkat Cohanim.
  51. Tefillah KeHilchata 14:51 based on Sh”t Shevet HaLevi 3:15, and the Imrei Yosher in name of the Chazon Ish writes not to answer Amen. Tefillah KeHilchata 14:51 writes that if one is saying Shemoneh Esrei together with the Shaliach Tzibbur one should answer Amen.
  52. Yalkut Yosef, Tefillah Volume 1, page 318
  53. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 15, Halacha 1
  54. Yalkut Yosef, Tefillah Volume 1, page 319
  55. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 15, Halacha 4, Kitzur S"A 100:3
  56. Gemara Rosh Hashana 28b, Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 15, Halacha 11, Kitzur S"A 100:19
  57. S"A 128:3, Mishna Brurah 128:11
  58. Yalkut Yosef, Tefillah Volume 1, page 322 Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 15, Halacha 5
  59. Yalkut Yosef, Tefillah Volume 1, page 319
  60. Rambam, Mishneh Torah: Hilchot Tefillah U'Birkat Cohanim, Chapter 15, Halacha 5
  61. Rav Mordechai Eliyahu (comments on Kitzur S"A 100:5)
  62. S"A 128:6, Kitzur S"A 100:4
  63. Rabbi Mansour on dailyhalacha.com
  64. Kitzur S"A 100:5
  65. S"A 128:6, Mishna Brurah 128:22
  66. S"A 128:7, Mishna Brurah 128:24
  67. Yalkut Yosef, Tefillah Volume 1, page 338
  68. Mishna Brurah 128:60, Aruch HaShulchan 128:24, Sh”t Har Tzvi 62
  69. Nesiut Kapim KeHilchata (Chap 9 note 53) writes that the Cohanim saying the "Yashar Koach" isn’t an issue. Piskei Teshuvot 128:48 writes that saying "Thank you" isn’t an issue.
  70. Halichot Shlomo 10:4
  71. Mishna Brurah 127:11. Tefillah KeHilchata (pg 297 note 110*) writes that some have the minhag to answer Ken Yehe Ratzon after the first two pesukim and Amen Ken Yehe Ratzon after the third pasuk.
  72. Kaf HaChaim 124:27 and Sh”t Yechava Daat 4:9 write that one should say Baruch Hu UBaruch Shemo after the name of Hashem.
  73. S”A 128:19, Mishna Brurah 128:71, Tefillah KeHilchata 14:52
  74. Mishna Brurah 128:71, Kaf HaChaim 128:112, Tefillah KeHilchata 14:52
  75. Piskei Teshuvot 128:3 based on Kaf HaChaim 128:79 who quotes the Zohar. However, see Sh"t Rivevot Efraim 1:93(2) who questions whether this prohibition applies to Yisraelim or not. See also Sh"t Yechava Daat 5:14 who defends the minhag to bless one's children with one or two hands.
  76. Rama 128:1, Yalkut Yosef, Tefillah Volume 1, page 296
  77. Yalkut Yosef, Tefillah Volume 1, page 296. See Biur Halacha 128:1 s.v. DeZar who writes that the minhag of Yisraelim to bless other Jews with the words of birkat cohanim is either based on the fact that perhaps there's only a prohibition if they raise thier hands like cohanim or that they have kavana not to fulfill the mitzvah of birkat cohanim.