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1. A Ger is forbidden to marry his maternal relatives.
2. There is a dispute regarding whether a Ger who marries his mother's paternal sister is required to divorce her.
3. A Ger is permitted to marry his brother's wife.
4. There is a dispute amongst the Tanaim regarding whether a Ben Noach may marry his father's wife or the sister of one of his parents.
5. Rav Huna maintains that a Ben Noach is permitted to marry his own daughter.
6. An Eved Kena'ani who is owned by a Yisrael is permitted to marry both his own mother and his own daughter.
7. A Ben Noach who designates a maidservant for one of his servants and then has relations with her is Chayav Misah.
8. A Ben Noach who strikes a Yisrael is Chayav Misah.
9. A person who raises his hand to strike someone is called a Rasha even if he does not actually hit him.
10. A Ben Noach who rests from Melachah for an entire day is Chayav Misah.
A BIT MORE
1. Rebbi Meir rules in the name of Rebbi Eliezer that a Ben Noach is forbidden to marry a relative to whom he is related through his mother. Consequently, a Ger is also forbidden to marry such a relative. Although a non-Jew who converts is considered as if he has been born anew and is no longer related to his previous relatives, the Rabanan decreed that a Ger may not marry any relative who was forbidden to him before his conversion, such as his mother's sister or his own sister through his mother. The Rabanan were concerned that if Geirim were permitted to marry their former relatives, they might feel as if their conversions had brought them from a higher level of Kedushah to a lower level.
2. Rebbi Meir maintains that a Ger who marries his mother's sister is required to divorce her, even if she and his mother share only a father but not a mother. Although a Ben Noach is permitted to marry the daughter of his mother's father, Rebbi Meir maintains that the Rabanan forbade a Ger to marry such a relative out of concern that if this were permitted, a Ger might come to marry his own maternal sister or his mother's maternal sister. The Chachamim disagree with Rebbi Meir and maintain that a Ger who marries his mother's paternal sister is not required to divorce her.
3. If a Ger's brother dies, the Ger is permitted to marry his brother's wife, even if his brother had already become a Ger when he married her. Since a Ger is considered to have been born anew, he is not considered to be related to his brother, and his brother's wife is therefore not prohibited to him. Since a Ben Noach is also not prohibited to marry his brother's wife, a Ger who is permitted to marry his brother's wife will not feel that his conversion brought him from a higher level of Kedushah to a lower level; consequently, the Rabanan did not need to prohibit such a marriage.
4. Rebbi Eliezer maintains that a Ben Noach is permitted to marry his father's wife but is forbidden to marry the maternal sister of either of his parents. Rebbi Akiva's position is the reverse of Rebbi Eliezer's; he maintains that a Ben Noach is forbidden to marry his father's wife, but he is permitted to marry the sister of one of his parents. Rebbi Eliezer maintains that the Arayos that are prohibited to Bnei Noach are their maternal relatives, while Rebbi Akiva maintains that the only Arayos that are prohibited to Bnei Noach are those relatives who are a Chiyuv Misah for a Yisrael.
5. Rav Huna explains that even though a Ben Noach is permitted to marry his own daughter, Adam ha'Rishon refrained from marrying his daughter so that Kayin could marry her.
6. An Eved Kena'ani is no longer considered a Ben Noach, but he is also not considered a Yisrael. Thus, he is no longer bound by the prohibitions of the Arayos of a Ben Noach, and he is also not subject to the Gezeirah that prohibits a Ger from marrying someone who was previously an Ervah. Since he has not yet achieved the status of a full-fledged Yisrael, the Rabanan are not concerned that he may feel that he has gone from a higher level of Kedushah to a lower level of Kedushah.
7. A maidservant is considered the wife of a servant when people begin to refer to her as his wife. Her status as his wife is terminated when she begins to appear in public with her hair uncovered, since in the times of the Gemara, even non-Jewish married women covered their hair in public.
8. When a person strikes a Jew in the face, it is tantamount to striking the Shechinah.
9. Rebbi Chanina says that a person who raises his hand to strike his fellow is called a sinner. Rav Huna says that his hand should be cut off. Rebbi Elazar says that he deserves to be buried.
10. Even if a Ben Noach rests from Melachah on a day other than Shabbos, he is Chayav Misah. This prohibition is not included in the seven Mitzvos of Bnei Noach because only Mitzvos that require a Ben Noach to refrain from an action are included, and this Mitzvah requires a Ben Noach to actively perform Melachah.
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