Today's daf is sponsored by Judy Shapiro in honor of Shira Krebs, our fearless Minneapolis Hadran convener, on yesterday's frailich wedding of her daughter Yonit to Yaakov Zinberg: Mazal tov!!!

Tali Oberman sponsors today's daf in honor of her grandmother, Barbara Oberman, who has contributed greatly to the Jewish people and celebrated her 90th birthday this week.

Would one be obligated to bring a sacrifice if one takes an oath of expression to fulfill a mitzva? There is a debate in the Mishna on this issue between Rabbi Yehuda ben Beteira and the rabbis.

A braita teaches that one who takes an oath not to observe a mitzva or to observe a mitzva is not a valid oath. From where do they derive this? The working assumption is that the topic of the verse in the Torah is optional actions. From where is this derived? The Gemara brings three suggested answers, while the first one is rejected.

If one takes an oath that repeats itself without adding on something new, the subsequent oaths are not valid and if one breaks them accidentally, one would be only obligated to bring one sacrifice. However, if the person were to go to a chacham to repeal the oath, the second oath would apply.