Talking Talmud

Two mishnayot! First - How you cannot redeem the first-born donkey (a list of the animals that don't work for this redemption). Who's opinion is represented in the mishnah? Ben Bag-bag. [Who's Who: Ben Bag-bag]. Second - What if the redemption lamb died before it was given to the kohen? The Gemara delves into the dispute in the mishnah, and attempts different rationales to see what the dispute is really based on.

Our first story in the tractate! Meaning, an actual case and discussion between the sages. On how much a person pays to redeem an animal from the kohanim, whether generous or stingy -- namely, via a lamb that is worth a certain amount of zuzim. What if there is no lamb? Then the redemption takes place via the value in another item. Also, in the event of depositing produce with a kuti or an ignoramus, you can pretty much continue apace when you get it back, but if you left your produce with a non-Jew, you need to treat it as produce that is new to you, as if nothing had been done, or at the very least as produce that has a doubt attached to it.

A debate between Rabbi Shimon and Rabbi Meir, as to whether a first-born donkey is permitted for benefit. Whether the animal is decapitated is a relevant element to the disagreement. Plus, the question of food impurity -- that which isn't forbidden for benefit is food, and vice versa, but then it can become impure. But then what about meat and milk that are cooked together, and prohibited for benefit? Because that's not Rabbi Shimon's opinion. The system of food impurity seems to be internal to itself. Also, the case of slaughtering a first-born animal for practice in slaughtering. [Who's Who? Nimos (and Rabbi Yehoshua HaGarsi)] Plus, Rashi's comment, as well as that of Rabbenu Gershom.

A new mishnah! When two donkeys are born at the same time, and it's not clear which one should be offered as a first-born (or a male and female and not clear which was born first). Also, the redemption of the first-born donkey with a lamb (or a kid). Note that a lamb can be used multiple times to redeem a donkey, given the proper procedure. Also, the Gemara delves into the case of designating a lamb as a possible redeemer -- with the sharp question why the owner who designates the lamb has to designate, since it will remain in his possession regardless.

Non-kosher fish "spawn" their offspring and nurse, where kosher fish lay eggs - with the exception of a bat, which lays eggs and also nurses, with many more factors to characterize the various animals (including wild geese and domesticated geese). Also, "dulfanim" -- "children of the sea" -- reproduce like people, and they may be dolphins or mermaid or sirens or something else. Plus, a question about the gestation of the snake. Also, philosophical discussion of the length of snakes gestation - 7 years? 3 years? 4 years? Note the Athenian sages. Eventually to debate the sages before the Roman caesar. Plus, social status and other timely decisions of the ancient world (12 of them).