1. There is a dispute about whether a punishment may be administered for transgression of a sin that should clearly be forbidden by the Torah, based on the fact that the Torah prescribes a punishment for a less severe sin.
2. There are two ways in which a person can accidentally transgress Shabbos and therefore be obligated to bring a Chatas.
3. There is a dispute about the law in the case of a person who serves an idol because he is either frightened or infatuated with a person.
4. The Gemara discusses whether bowing to an idol is considered an "action."
5. Rava explains that there are two types of "Chover Chaver."
A BIT MORE
1. Rabanan: We derive from the fact that the Torah writes an extra verse to prohibit relations with one's half-sister that one's sister who shares a common mother and father is also forbidden and punished accordingly. Rebbi Yitzchak: If the Torah forbids a sister who shares a common mother, and a sister who shares a common father, it certainly punishes a sister with a common mother and father, and no extra verse is needed to teach this.
2. One way is if he forgets that today is Shabbos but remembers that the Melachah he is doing is forbidden on Shabbos (this is known as Shigegas Shabbos). The other way is if he remembers that today is Shabbos but forgets that the Melachah that he is doing is forbidden to be done on Shabbos (this is known as Shigegas Melachah).
3. Abaye: One who does so is killed for the sin of idolatry. Rava: Although it is forbidden, one who does so is exempt from being put to death.
4. Reish Lakish: Bowing is not considered an action. Rebbi Yochanan: Bowing is considered an action.
5. One type of "Chover Chaver" is a person who sacrifices to the king of demons, and therefore he is stoned to death. The other type is a person who uses witchcraft to gather all kinds of animals together. He is not put to death but does transgress a negative prohibition.