Talking Talmud

A new mishnah! In the case of a knife fell and slaughtered the animal officially correctly, the shechitah is not actually kosher because a person must be involved doing the slaughtering. But if a person dropped the knife, even without intent, then the person is there as an agent, and the shechitah may well be kosher. The question is whether intent is required for shechitah to be valid. Also, the case of produce that falls into a channel of water, and the produce is removed by a person who has impure hands - but the process itself will purify his hands. The water is one of 7 liquids that, when in contact with produce, makes the produce susceptible to impurity. Plus, the levels of purity and impurity - and how immersion in the mikveh to be purified requires intent for the required level of purity to follow - for example, to eat ma'aser sheni food. Which seems to require more planning than we might have thought.

If there's more than one incision in the pipe, can that be kosher shechitah? It's a machloket. What about 2 people holding the knife for one animal's slaughter? That's one incision, but 2 people with 2 knives, which means 2 incisions, and it has all kinds of insecurities associated with it - and could result in non-kosher shechitah, but we really don't worry about that, and allow it. Note the many cases of shechitah that are left without conclusions. Also, a new mishnah: 1 person who slaughters 2 animals simultaneously; likewise, the 2 people holding one knife (as presented in the Gemara on the daf right before the mishnah), even with 2 cuts -- all of those cases are kosher shechitah. But decapitation in one motion is not considered valid. With the possibility of it being kosher if the length of the knife is the breadth of the animal's neck.

More on the question of when a siman is cut precisely halfway across - is that 50/50 considered the majority or not? (it's still a machloket). With the parallel to the requirement that at least half of the population of the Jews need to be pure to be able to participate in the Pesach sacrifice. That 50/50 seems to be acceptable, rather than leaving a full half of the people to make up the sacrifice on Pesach Sheni (14th of Iyar). But as much as this example is brought in parallel to the shechitah case, they're also quite different. Also, when is the action of slaughtering actually considered to be an act of shechitah? From the beginning of the process or only once it has been concluded? The practical implication being for incomplete draws of the knife and so on.

On the bird's "one siman" being severed, does it make a difference which of the esophagus or the trachea is cut? It's a machloket, whether "either one" is enough or one specific one needs to be cut. The Gemara provides a mnemonic to support 5 different arguments, half of which support the one view above and the other half the other view. Plus, the order of when the simanim themselves are examined in the context of shechitah, and then the order of cutting. Also, what if one of the simanim were cut to be 50/50 cut/not cut -- does that count as the majority being cut or not at all cut? But how can anyone be certain, to that degree of precision?

Chapter 2! A new mishnah... On slaughtering a "bird," where cutting one "siman" (windpipe or gullet) is sufficient for kosher shechitah, or an "animal" - that requires both simanim for kosher shechitah. Which leads to a discussion of partial completion of cutting, and how much must be cut to be considered as if it were cut in full for a kosher shechitah. Plus, sourcing "shechitah" in the Torah and the fact that it's done at the neck of the animal. Also, a "drasha" on how an animal's shechitah is kosher, how fish are killed, without a requirement for shechitah, why fowl only require the severing of one pipe, and more. Plus, the interpretations that shed light on the domesticated animals as compared to the non-domesticated animals, which seem to have lesser requirements.