Talking Talmud

More on advance payments... Where the product has to already be in one's tradition (in contrast to gourds, for example, that still need to grow). Plus, a specified amount as an advance discount that isn't used immediately is later considered interest. Also, a new mishnah! One who borrows money from another cannot allow the lender to stay in his courtyard, for example, lest it smack of interest (with some exception, based on the circumstances).

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 seller into the borrower...

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.

The final two mishnahs of the fourth perek deal with deceptive practices shopkeepers may not do because they hurt the buyer.

The daf tells one of the most famous stories in the Gemara - Tanur Shel Akhnai. But why this story appears and the lessons to be learned from the disagreement between Rabbi Eliezer and the sages are often misunderstood. So why does this story appear in Bava Metzia and what does it teach us?

Consecrated items for which one bears responsibility are subject to price fraud, but when one is not responsible, price fraud is irrelevant. But what does it mean for the consecrated property to belong to God? What about the human dimension? Plus, taking advantage of market demands, for better and worse. Also, a new mishnah - on "ona'at devarim" -- oppression or exploitation or just plain obnoxious speech.

When is the capacity to take advantage of another not relevant? And if there's no risk of exploitation, is there any recourse to cancel the transaction for other reasons? Note the exceptions of consecrated property (hekdesh) and land... Also, what if transactions or loans are made in conjunction with consecrated property? The Temple has some flexibility with fluctuations in the costs of things - without it being exploitative.

A Mishnah lists cases where onaah does not apply and the Gemara discusses the scriptural sources for these categories.

2 mishnayot - Mishnah 1: Determining the differential to be considered exploitative, the amount to swear, and the amount to admit to owing money. Plus, 5 cases that depend on the equivalent of one perutah. Also, Mishnah 2: 5 halakhic categories for which "one-fifth" is relavant as an element of the halakhah.