When does substitution actually take effect? How to deal with multiple substitutions; the many dilemmas of Rabbi Avin

We continue the discussion of ownership of a first born animal, including what happens when a firstborn animal is sold

The transgressions that apply to blemished animals and other forms of consecrated items; and who actually owns a firstborn animal.

What exactly are Abaye and Rava arguing about? Let's find out!

Does the Torah punish for transgressions that do not take effect? A classic debate between Abaye and Rava

Separating Terumah before first fruits; A negative commandment that is "fixed" by a positive commandment: Does the Torah punish for negative prohibitions that do not take effect

Intentional and accidental vows and the punishment for cursing others are among the highlights of this Daf

In this episode, we learn the first page of Tractate Temurah