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Bosis: Difference between revisions
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==What is a Bosis?== | ==What is a Bosis?== | ||
# An object upon which [[Muktzeh]] was left intentionally from before [[Shabbat]] and one intended that it stay there as [[Shabbat]] entered (during [[Bein HaShemashot]]), the object becomes a Bosis. <ref>Kitzur Shulchan Aruch 89:1</ref> | # An object upon which [[Muktzeh]] was left intentionally from before [[Shabbat]] and one intended that it stay there as [[Shabbat]] entered (during [[Bein HaShemashot]]), the object becomes a Bosis. <ref>Kitzur Shulchan Aruch 89:1</ref> | ||
# If muktzeh was placed on an object for part of Shabbat but was going to be removed before the end of Shabbat that object is a bosis.<ref>Rashba Shabbat 51a s.v. ha, Rashi</ref> Some Ashkenazim hold that it isn't a bosis unless one intended to leave it there for all of Shabbat.<ref>Baal Hameor to 51a. | |||
* Rashba 51a asks how the Baal Hameor could say that it isn't a bosis if one intends to remove it on Shabbat since every candle is like that since it is going to go out. The Rashba beitzah 2a s.v. ubet answers for the Baal Hameor that since one couldn't extinguish it during Ben Hashemashot it is a bosis even if one knew it wouldn't be a bosis for all of Shabbat. Alternatively, a candle is muktzeh machmat isur and not a bosis. See Shaarei Muktzeh p. 291 for explaining the Rashba.</ref> | |||
# One may not move a Bosis on [[Shabbat]] even if one needs its place or to use it for a permitted use. <ref>Kitzur Shulchan Aruch 89:1</ref> | # One may not move a Bosis on [[Shabbat]] even if one needs its place or to use it for a permitted use. <ref>Kitzur Shulchan Aruch 89:1</ref> | ||
# If money or any other [[muktzeh]] item was left unintentionally on a table, one may learn on the table on [[Shabbat]] if it isn’t certain that learning there will cause the money to move. <Ref> The Mishnah ([[Shabbat]] 142b) states that if one wants to move a barrel on [[Shabbat]] and a rock was left on top of the barrel from before [[Shabbat]], he may tilt the barrel so that the rock falls off and then move the barrel. The Gemara limits this to a case in which the rock was left unintentionally; however, if the rock was left on top of the barrel intentionally, one may not move the barrel at all, as it is considered a bosis for [[muktzeh]], serving as a support of the [[muktzeh]] item. The Mishnah explains if one isn’t able to tilt off the rock, such as if there’s a fear of it breaking other barrels nearby when it is tilting off, one may move the barrel with the rock on top until one reaches a places where one can safely remove the rock. The Rambam ([[Shabbat]] 25:17), Tur, and S”A 309:4 codify this as Halacha. | # If money or any other [[muktzeh]] item was left unintentionally on a table, one may learn on the table on [[Shabbat]] if it isn’t certain that learning there will cause the money to move. <Ref> The Mishnah ([[Shabbat]] 142b) states that if one wants to move a barrel on [[Shabbat]] and a rock was left on top of the barrel from before [[Shabbat]], he may tilt the barrel so that the rock falls off and then move the barrel. The Gemara limits this to a case in which the rock was left unintentionally; however, if the rock was left on top of the barrel intentionally, one may not move the barrel at all, as it is considered a bosis for [[muktzeh]], serving as a support of the [[muktzeh]] item. The Mishnah explains if one isn’t able to tilt off the rock, such as if there’s a fear of it breaking other barrels nearby when it is tilting off, one may move the barrel with the rock on top until one reaches a places where one can safely remove the rock. The Rambam ([[Shabbat]] 25:17), Tur, and S”A 309:4 codify this as Halacha. | ||
