From Halachipedia
This is the approved revision of this page, as well as being the most recent.
  1. The Torah prohibits the destruction of human and animal reproductive organs.[1]
  2. If a male's reproductive organs were damaged after birth he is excluded from the Jewish community[2]
  3. Sterilizing a woman is also forbidden.[3]
  4. Using a medicine to sterilize a man or animal is forbidden.[4]
  5. One may not have a non-jew sterilize an animal on his behalf. Therefore if one has a pet dog or cat one may not instruct the vet to neuter and spay, rather he should sell the animal to a non-jew and that non-jew should instruct the vet to do the procedure.[5]
  6. If a man had a sterilization he must get it undone as quickly as possible, as soon as this is over, he can now be included in klal yisrael.[6]


  1. Vayikra 22:24, S”A EH 5:11
  2. Deuteronomy 23:2, Rambam Isurei Biyah 16:9, Shulchan Arukh Even HaEzer 5:10. Some say that if there is no visible damage to the reproductive organs and yet is unable to bear children he is muttar lavo b'kahal, Arukh HaShulchan Even HaEzer 5:24
  3. Rambam Isurei Biyah 16:11, Shulchan Aruch EH 5:11. Gra EH 5:25 implies it is biblical without malkot. Perisha 5:30 explains that the reason it is forbidden to sterilize women is because they won’t be able to populate the world (lo tohu l’shevet yetzara) which also applies to women.
  4. Gemara Shabbat 110b, Shulchan Aruch EH 5:12
  5. Shulchan Arukh Even HaEzer 5:14
  6. Laws of Forbidden Relations, Chapter 16