This week's learning is dedicated by Medinah Korn in loving memory of her mother, Rosalie Katchen, Shoshana Raizl bat Avraham Yehoshua ve-Baila Toibe, z"l, on her 25th yahrzeit. She left a profound legacy for her family and many devoted friends who continue to learn from her to this day. Yehi zichra baruch.

Today's daf is sponsored by David and Mitzi Geffen in loving memory of David's mother Ethel Petegorsky Geffen, on her 21st yarhzeit. She was devoted to her family and the Jewish community, volunteering on many synagogue and community committees and projects. Her two sons made aliyah to Israel and her daughter has had a long career in service of the American Jewish community.

Today's daf is sponsored by Ayla Ginat in loving memory of Barak ben Lipa and Shlomit.

If the Beit Din realized they made an erroneous ruling, but an individual is unaware and transgresses based on their original ruling, do they need to bring an individual sacrifice? While the Msihna brought two opinions, a braita brings four. Rabbi Meir obligates the individual to bring a sin offering, Rabbi Shimon exempts, Rabbi Elazar and Sumchus view it as a case of doubt, but Rabbi Elazar obligates in a provisional guilt offering, while Sumchus does not.

Rabbi Zeira and Rabbi Yossi bar Avin bring examples of other cases of doubt to explain the difference in approach between Rabbi Elazar and Sumchus – to what extent do we expect the individual to be aware that the rabbis corrected their mistake?

Rava explains the disagreement in the Mishna between Ben Azai and Rabbi Akiva to be regarding a case where the court realized their mistake on the day that the individual in question was still in the city but preparing to leave. As in the previously mentioned debate, the question is to what extent the individual is expected to be aware of the court's reversal of their decision while they are busy involved in their upcoming travel plans.

The Mishna taught that the case of a communal sin offering is only in a case where the court's erroneous ruling was to uproot part of a mitzva, not a complete mitzva. A braita brings one derivation, Chizkiya has another, and Rav Ashi brings a third.

Rav Yehuda says in the name of Shmuel that the ruling has to relate to something that the Saducees do not agree with, i.e. something rabbinic in origin and not able to be understood from the simple reading of the verses in the Torah. The reason for this is simple – if it is clear from the Torah and the court rules otherwise, and the people follow, this cannot be understood as unwitting, as it is closer to an intentional violation. Three difficulties are raised against Rav Yehuda from the examples brought in the Mishna, but each one is resolved.

Rav Yosef asks: If the court rules there is no prohibition to plow on Shabbat, is that considered uprooting a complete mitzva or a partial one? The Gemara tries to answer the question by deriving it from cases in our Mishna, but is not able to.

Rabbi Zeira asks if the court rules that there is no Shabbat observance in the Shmita year, is that considered uprooting a complete mitzva or a partial one? Ravina brings a source from a false prophet to answer that it is considered a partial mitzva, and they would be obligated to bring a communal sin offering.

There are several cases where there is an issue with judges – either disqualified judges, or the head judge was not there, where there is no communal sin offering, as the case is considered closer to intentional.