R. Elazar: Did anyone teach Rav that an udder (that was cooked without tearing it) is forbidden?

Version #1 - Rav Kahana - Rav Yitzchak bar Avodimi: I did not teach that to him at all! Rather, he saw that people in Tatalfush cooked meat with milk, so he decreed this stringency.

Version #2 - R. Yosi bar Aba - Rav Yitzchak bar Avodimi: I taught him that an udder of a nursing cow (that was cooked without tearing it) is forbidden. The Mishnah discusses an udder of a cow that is not nursing;

R. Chiya taught Rav that an udder (that was cooked without tearing it) is forbidden. He expected Rav to realize that applies only to a nursing cow;

Rav thought that it applies to all udders.

Rav Papi hosted Ravin and Rav Yitzchak bar Yosef. He served a dish with udders; Rav Yitzchak ate, but Ravin would not eat.

Abaye: Ravin should have eaten! Rav Papi's father-in-law, R. Yitzchak Nafcha, is very careful about his deeds. If Rav Papi served it, surely he relied on what his father-in-law taught him.

In Sura, people did not eat udder. In Pumbadisa, they would eat it.

Rami bar Tamri was from Pumbadisa. He came to Sura on Erev Yom Kipur, and saw everyone discarding udders. He gathered them and ate them.

Rav Chisda: Why did you do so?

Rami bar Tamri: I come from Rav Yehudah's area, where we eat udder.

Rav Chisda: One must observe the stringencies of where he comes from and where he is staying!

Rami: I ate them outside the Techum. (The area surrounding the city, it is considered an extension of the city).

Rav Chisda: What fuel did you use to cook them?

Rami: I used grape skins.

Rav Chisda: Perhaps they were from Nochrim (and are forbidden like wine poured to idolatry)!

Rami: They were over 12 months old. (Dry grape skins are not forbidden.)

Rav Chisda: Perhaps they were stolen!

Rami: The owners despaired from them (so they were Hefker). They were moldy and growing prickly hairs.

Rav Chisda: Why aren't you wearing Tefilin?

Rami: I have a stomach sickness. Rav Yehudah exempts in such cases.

Rav Chisda: Why don't you have Tzitzis on your garment?

Rami: It is borrowed. Rav Yehudah exempts a borrowed garment for 30 days.

A man was being tied to be lashed for not honoring his parents.

Rami: Release him! A Beraisa teaches that Beis Din does not punish for a Mitzvas Aseh if its reward is stated in the Torah.

Rav Chisda: You are very sharp!

Rami: There are people in Pumbadisa, Rav Yehudah's area, sharper than myself.

Abaye sent Rav Safra to ask (in Eretz Yisrael) if (R. Tam - unsalted) liver may be cooked (in a pot).

Rav Zerika (to Rav Safra): I cooked liver for R. Ami, and he ate it.

Rav Safra told this to Abaye.

Abaye: I knew that the liver itself is permitted. I wanted to know if it forbids what it is cooked with.

Rav Safra: You knew from a Mishnah that the liver itself is permitted. The same Mishnah forbids what it is cooked with!

(Mishnah): Liver forbids what it is cooked with, but it itself remains permitted, because it emits (blood), but does not absorb.

Abaye: Perhaps only a forbidden liver (e.g. of a Terefah) forbids other food because it emits forbidden fat, but a permitted liver does not forbid (due to blood), nor does it become forbidden.