(Mishnah - R. Yehudah): If one trapped a bird in a cabinet or a deer in a house, he is liable;

Chachamim say, he is liable for a bird in a cabinet or a deer in a garden, Chatzer or Biver (an enclosure of game);

R. Shimon ben Gamliel says, not all Bivrin are the same.

The general rule is, if it still needs to be trapped (this will be explained) he is exempt; if not, he is liable.

(Gemara - R. Chinena): The Mishnah (Beitzah 3:1), is unlike R. Yehudah. [Here, R. Yehudah] teaches that if one trapped a bird to (i.e. in) a cabinet or a deer to (in) a house, he is liable. This implies that if he trapped it to a garden or Biver, he is exempt [for it is not considered trapped there], and there the Mishnah says that one may not trap fish from a Biver [on Yom Tov], and one may not put food in front of them. This implies that that if he trapped them to a Biver, he is exempt [for they are not considered trapped there]!

Question: Rabanan contradict themselves! In our Mishnah, Chachamim say [that one is liable for trapping] a bird to (i.e. in) a cabinet or a deer to (in) a garden, Chatzer or Biver. The Mishnah there says "but one may trap a Chayah or bird from a Biver, and put food in front of them.'' This implies that one may not trap them from a garden or Chatzer!

Answer #1: Here [our Mishnah] discusses a roofed Chatzer [they are trapped there], and [the Mishnah in Beitzah] discusses a Chatzer without a roof.

Question: Our Mishnah teaches [also] a garden. Can you say that a garden has a roof?!

Answer #2: Rather, [the Mishnah in Beitzah] discusses a big (garden or Chatzer), and [our Mishnah] discusses a small one.

R. Ula: They asked R. Acha, should we teach [in the Mishnah in Beitzah like our Mishnah,] "anything Mechusar Tzeidah [it was not trapped yet] one is liable, and anything not Mechusar Tzeidah one is exempt''?

(R. Acha): [No -] does it not discuss Yom Tov?! Rather, [teach there] "anything Mechusar Tzeidah is forbidden, and anything not Mechusar Tzeidah is permitted.''

Note: HA'GAON RAV C. KANIEVSKY, SHLITA explains that there is no Chiyuv Chatas for Yom Tov. Some explain that there is no Torah Isur of Ochel Nefesh on Yom Tov, just Chachamim decreed about matters such as trapping which are normally done at once for many days. And if it is already trapped, it is totally permitted to take from there to eat.

(R. Shmuel, the brother of R. Berachiyah): Anything Mechusar traps [to catch it] is Mechusar Tzeidah. Anything not Mechusar traps is not Mechusar Tzeidah.

We may slaughter from Nigrin (grazing areas next to rivers). We may not slaughter from caves [in which traps were set] and traps.

(R. Yosi bei R. Bun citing R. Ami): This refers to big traps.

(Shmuel): One may trap [fish] from a big barrel.

(Rav): [One may trap fish] from a dammed river.

(R. Yudan): This is only when the place is closed off. (We explained this like PNEI MOSHE.)

(Mishnah): If a deer entered a house and one locked the door, he is liable. If two people locked the door, they are exempt;

If one could not lock it and two people locked it, they are liable. R. Shimon exempts.

(Gemara): "B'Asosah'' - an individual who did [an Aveirah] is liable. Two or three who did are exempt.

(R. China): If one of them was healthy, and one was weak, if the Choleh (weak one) locked with all his strength, and the Bari did not lock with all his strength, the Choleh is liable and the Bari is exempt.

(R. Yosi bei R. Bun citing R. China): If a deer was running normally and one intended to lock [the door] in order to guard his house,] and he locked to guard [his house] and the deer, it is permitted.

(R. Yosi bei R. Bun citing R. Chunah): If one saw a child floundering in the river (he is in danger of drowning), and he [cast a net on Shabbos] and intended to raise him and fish with him, it is permitted.

(R. Yosi bei R. Bun citing R. Chunah): If one was excavating a collapsed house (on Shabbos), and he intended to raise (save a person buried under the rubble) and raise bound gold coins with him, it is permitted.