Who is Rabbi Oshaya l, an amora, and what is his relationship with tannaitic literature. The daf discusses how a seller can use produce to pay a debt.

Is interest recoverable? It's a machloket, of course. Plus, how that plays out in the Jewish vs. non-Jewish courts, and the ways they functioned differently. Also, elaborating on the mishnah's case of rising market price, and a trade for another product, which (in this specific case) turns the...

Chapter 5! A new mishnah, a new topic - moneylending, and the prohibition against taking interest. Also, the sidebar explanation for addressing the exodus from Egypt in the context of interest.