Today's daf is sponsored by Sylvia Klein in loving memory of her brother, Bobby Klein, who passed away 40 years ago. "He taught us about love and acceptance. His humor, friendliness, and loving spirit is greatly missed."

Rav Huna ruled like Rabbi Yehoshua ben Korcha, who distinguished between loans with a promissory note and those without, and permitted Jews to collect loans without a promissory note from gentiles before their holidays. He also ruled like Rabbi Yehuda on the issue of a dyer who dyed someone's wool the wrong color. Rav Yosef did not understand why Rav Huna needed to explain the ruling like Rabbi Yehuda, as he thought it was obvious from the stam Mishna in Bava Metzia that corresponded to his opinion, as when there is a Mishna with a debate that is followed by a stam Mishna, the ruling is always like the stam Mishna. What was that not obvious to Rav Huna? 

The Gemara quotes several other debates between Rabbi Yehoshua ben Korcha and others in which the ruling is like Rabbi Yehoshua ben Korcha.

Rabbi Yishmael forbade doing business dealings with gentiles three days before and three days after their holidays. Shmuel explained that based on Rabbi Yishmael, it is forbidden to have any business dealings with Christians, as every Sunday they have a holiday. 

The rabbis disagree and forbid business dealings before. The Gemara questions how their opinion differs from the tanna's opinion in the first Mishna of the masechet. Four suggestions are brought. The last relates to an opinion of Nahum the Mede. There are several issues brought in the Gemara where Naum the Mede disagreed with the sages or individual sages on a particular issue, and the rabbis were unwilling to accept his position.