Today's daf is sponsored by Karen Carter in honor of Julie Hilton Danan's birthday! "Happy birthday to my first chevruta!" 

In what cases is one no longer trusted to take an in court that he/she paid back the loan? Rav Nachman was quoted as differentiating between a case where the court had ruled "Give the money back" and "You are obligated to pay." However, there were two different versions of the situation in which Rav Nachman distinguished between the cases. Two statements of Rabbi Yochanan are brought where based on a false claim one makes regarding a case, they are no longer believed to be able to take an oath relating to that case. Rabbi Asi quotes Rabbi Yochanan as saying that if a promissory note stamped by the court is found with today's date, we can assume it was not yet paid back as people do not generally return loans on the same day. However, this contradicts another statement of Rabbi Yochanan that is premised on the fact that people could pay loans back on the same day. This is resolved in two possible ways. Rabbi Yochanan makes another statement that if something is deemed obligatory by the court, such as a ketuba, then one is not trusted to say "I already paid it back" (if they can't bring witnesses to prove it) even if the other side does not have a document in hand. Rabbi Chiya bar Abba questions Rabbi Yochanan by asking isn't that an explicit Mishna? Rabbi Yochanan responds by saying that without his statement, it would not have been clear from the Mishna. Abaye suggests that what Rabbi Yochanan said cannot be derived from the Mishna but then changes his mind and explains that it can be, using as proof a case of a widow from betrothal who receives ketuba money. Rav Keshisha tries to find a source for Abaye's halakha about a betrothed woman from a Mishna but rejects his own suggestion. own suggestion.