Study Guide Shabbat 69 Today's shiur is dedicated for a refuah shleima for Netanel Ilan ben Shayna Tzipora. What are the different approaches to one who sins unwittingly - what about the prohibition was forgotten? Munbaz holds that one knew it was forbidden and knew the punishment for doing it on purpose but didn't know that one is obligated to bring a sacrifice for performing it unwittingly. The rabbis disagree and rabbi Yochanan and Reish Lakish disagree about whether one was unwitting about the prohibition or about the punishment for the prohibition (karet). Abaye compares two other cases where one is also obligated if one did it unwittingly but there is no punishment of karet if it was performed intentionally. He says that all agree in those cases (swearing falsely and a non priest who ate truma). Who is all - the rabbis and Munbaz or Rabbi Yochanan and Reish Lakish. Rava disagrees with Abaye in the case of truma. If one is in the desert and lost track of days, how does one keep Shabbat?