(Mishnah): If a woman's sons converted with her, the sons do not do Yibum or Chalitzah to each other's wives. This is even if the first son was conceived before conversion and born after conversion, and the second was conceived and born after conversion;

The same applies to a slave whose sons were freed with her.

(Gemara): A convert is liable for [cursing] his mother, and he is not liable for his father (Halachically, he has no father). R. Yosi ha'Gelili says so;

R. Akiva says, "Aviv v'Imo Kilel" - one who is liable for his father, he is liable for his mother. One who is not liable for his father, he is not liable for his mother.

R. Akiva agrees about a Shetuki, that he is liable for his mother, even though he is not liable for his father. (He should be liable for his father, just we do not know who is his father.)

(R. Yakov bar Acha citing R. Yosa citing R. Yochanan): They argue about a convert whose conception was not in Kedushah (before his mother converted), and his birth was in Kedushah (after conversion);

However, if his conception and birth were [both] not in Kedushah, even R. Yosi ha'Gelili agrees.

R. Yosa went to Chamatz. People of Bar Eshtin's house came and asked him if converts do Yibum. He told them, R. Yochanan forbids.

Assumption: This refers to a woman with children, but a woman without children, no matter what you will say, [he may marry his brother's widow]!

If she is [considered] his brother's wife, he does Yibum. If she is not [considered] his brother's wife, he is like one who marries a stranger!

Rejection (R. Yakov bar Acha citing R. Yitzchak bar Nachman): Even so, it is forbidden, lest people say 'we saw Mitzvas Yibum among converts!' (If people think that Yibum applies to them, they will ignore Kidushin of a convert's 'Yevamah' l'Shuk, and really, she is not a Yevamah and it is Kidushin.)

Limitation: This is when [the Mes] had Bi'ah with [his wife] after conversion, but if he did not have Bi'ah with her after conversion, all agree that [the brother] is like one who marries a stranger. (There is no concern lest people think that there is Yibum among converts.)

If a man converted and he was married to a woman and her daughter, or to a woman and her sister, he enters [has Nisu'in with] one and sends away the other.

Limitation: This is when he did not have Bi'ah with either after conversion, but if he had Bi'ah with one of them after conversion, that one is his wife.

If he had Bi'ah with both of them [after conversion], since he had Bi'ah [with both], he had Bi'ah (he may keep both of them).

If a convert [was married to] his sister, whether paternal or maternal, he sends her away. R. Meir says so;

R. Yehudah says, a maternal sister, he sends her away. A paternal sister, he may keep her.

[If a convert was married to] his mother's sister, he sends her away. His father's sister, he may keep her. R. Meir says so;

R. Yehudah says, his mother's maternal sister, he sends her away. His mother's paternal sister, he may keep her.

All other Arayos, if he married her, we do not force him to send her away.

Limitation: This is only if he made Nisu'in, but l'Chatchilah, it is forbidden.

If a Nochri [was married to] his sister, whether paternal or maternal, he sends her away. R. Meir says so;

R. Yehudah says, a maternal sister, he sends her away. A paternal sister, he may keep her.

[If a Nochri was married to] his mother's sister, he sends her away. His father's sister, he may keep her. R. Meir says so;

R. Yehudah says, his mother's maternal sister, he sends her away. His mother's paternal sister, he may keep her.

(R. Chanin): R. Meir learns from "Al Ken Ya'azov Ish Es Aviv v'Es Imo" (i.e. the one next to his father, and the one next to his mother, i.e. his aunts).

Question (Rav Bivi): If so, his father's sister is forbidden, for she is next to his father! His mother's sister should be forbidden, for she is next to his mother! (Why does R. Meir forbid only his mother's sister?)

Question (R. Shimon brei d'R. Eivo): It says "va'Yikach Amram Es Yocheved Dodaso Lo l'Ishah." If so (a Nochri is forbidden to his father's sister), Yisrael did not conduct even like Bnei Noach!

(R. Heila): The one next to him from his father (his paternal sister), and the one next to him from his mother (his maternal sister).

Question (against R. Meir): It says "v'Gam Emnah Achosi Bas Avi Hi Ach Lo Bas Imi"!

Answer (R. Meir): Do you bring a proof from there? No - "va'Tehi Li l'Ishah" (Avraham explained why Sarah is permitted to him according to their conduct; they permitted a paternal sister. Really, she was his niece, and she was permitted in any case - HA'GAON RAV C. KANIEVSKY, SHLITA.)

Question: What is the Halachah?

Answer (R. Yosah): Any Ervah that Beis Din of Yisrael kill for it, Bnei Noach are commanded about it. Any Ervah that Beis Din of Yisrael do not kill for it, Bnei Noach are not commanded about it.

Question: His sister - Beis Din of Yisrael do not kill for it, and Bnei Noach are commanded about it!

Question (R. Heila citing Reish Lakish): "U'Viglal ha'To'evos ha'Eleh Hash-m Elokecha Morish Osam Mipanecha" - this teaches that Hash-m does not punish unless He warned (and it connotes that the Kena'ani nations were punished for all Arayos forbidden to Yisrael)!

(Rav Idi, in front of R. Yosi, citing Rav Chisda): A slave is permitted to his sister.

Question (R. Yosi): Did you hear that this is even a maternal [sister]?

Answer (Rav Idi): Yes.

Question (R. Yosi - Mishnah): The same applies to a Shifchah whose sons were freed with her (they are just like converts. A convert is forbidden to his sister!)

Answer (Rav Idi): [The Mishnah equates them only] for Chalitzah and Yibum.

(R. Pinchas, in front of R. Yosi, citing R. Yosi): A slave who had Bi'ah with his mother is Chayav Chatas. "V'Amarta Aleihem" (in Parshas Chatas) includes slaves.

Question: Or, perhaps this was said (we include slaves) for [Aveiros such as] Chelev (but not for Arayos)!

Answer: We find regarding connection to the mother, that after conversion is like before conversion. (Even though mid'Oraisa, a convert is like a newborn without any relatives, mid'Rabanan he is forbidden to all that he was forbidden to beforehand, lest people say that there is less Kedushah after conversion.) Also a Shifchah, we make after conversion like before conversion. (We explained this like PNEI MOSHE.)