Kerisos 3:5 - 3:6

בתו ואחותו – as, for example, he who has sexual intercourse with his mother and gives birth from this to a daughter, and she is his daughter and his sister from his mother, but his brother’s wife who was married to him prior to this and he died, and after his death, she married his father’s brother, and her father had sexual intercourse with her while she was a menstruant woman, and now we have the prohibition of his daughter and his sister that come as one. But even though she is illegitimate and prohibited to enter into the congregation/community [of the LORD], when she married to her father’s brother, the betrothal/Kiddushin was valid with her, because Kiddushin/betrothal takes effect in those who are liable for violating a negative commandment. Alternatively, if her father’s brothers were illegitimate/Mamzerim they are permitted to marry her ab initio, but she is prohibited to her father because of the prohibition of his brother’s wife because he is an additional prohibition, for at the outset, she was permitted to all the brothers of her father, and when she married to one of them, she became prohibited to all of the rest of the brothers [of her father], and because the name of brother’s wife takes effect regarding the rest of the brothers that she was permitted to him, the name of the brother’s wife also takes effect regarding her father to make her liable also because of the wife of his brothers. If his brother died and she married the brother of her father’s father, since it adds to her a prohibition regarding the rest of his father’s brothers, it adds to her the prohibition regarding himself. She would be a married woman, since she added a prohibition regarding the world (i.e., by being married), a prohibition added to her regarding him. If she became menstruous, since a prohibition was added regarding her husband, a prohibition was also added regarding him.

חייב עליה משום בת בתו וכלתו – as for example, when she married his son.

ואחות אשתו – when he married the daughter of his brother-in-law, who is the sister of his daughter’s daughter from/through the father.

ואשת אחיו – when his son died and she married the brother of this one.

ןאשת אחי אביו – that his brother died and she married his father’s brother.

אם עבר הזקן (if the grandfather transgressed) – the father of this one, and he married her, and afterwards, he had sexual relations with her, e is liable even on the [prohibition of] the father’s wife. But even though she is the wife of his brother, for we obligate him to an entity because of the wife of his father’s brother, so we see that she is forbidden to him, to his father because of her being his brother’s wife and she has no marital status with her, what are we dealing with here? As for example, when she fellow before him for a levirate marriage from his brother, who died without children and he engaged in levirate marriage and married her, but this grandfather who sinned who is taught in the Mishnah, which is because she is to him only a second level prohibition, because of the daughter of his son’s daughter and because of the wife of his son, because from the words of the Scribes, both of them are secondary relationships. But if you say that she is his daughter-in-law, we obligate him to an entity because she is the brother’s wife, which is not a refutation/objection, for one could establish that she is the brother’s wife of his son from his mother, and not the daughter-in-law of the father, but rather, the wife of his stepson and she is permitted to him. But if you should say, what prohibition is there that is added with the daughter of his daughter, when his father sinned and married her, for she is liable to him also, because of the prohibition of being the wife of the father, This matter is asked in the Gemara (Tractate Keritot 14b) and they answered that there is a son to the grandfather and he is the brother of that one (the Gemara uses the illustration of Ishmael dying without children and Isaac, his brother, who is the father of Jacob, engaged in a levirate marriage with Ishmael’s wife; but even though she is the wife of the brother of Jacob his son (i.e., Esau), she is not his daughter-in-law, for we are speaking here of the brother of Jacob from the mother, for he was not the son of Isaac), for since a prohibition was added through her regarding that son because of her father’s wife, a prohibition was added also regarding him.

וכן הבא על בת אשתו – he is liable for her because of of these that he is liable with his daughter.

ועל בת בת אשתו – he is liable because of all of those that he is liable for engaging in sexual intercourse with the daughter of his daughter. But the daughter of his wife who is his sister is found with her. As, for example, that his father either raped or seduced a woman and through her gave birth to a daughter, and afterwards he married the raped or seduced wife of his father who is permitted to him, for that daughter is his sister or the daughter of his wife. But the daughter of his wife’s daughter and the siser of his wife is found, as for example, that the father of his wife had sexual relations with the daughter of his wife, and she gave birth to a daughter, that daughter is the daughter of his wife’s daughter and the sister of his wife.

משום חמותו וכלתו ואחות אשתו (because of his mother-in-law, his daughter-in-law and his wife’s sister) – the father who had sexual intercourse with his daughter and produced from her a daughter, Reuven married this daughter, her mother is prohibited to him because she is his mother-in-law and [because] she is his wife’s sister; If she married the son of Reuven, there is added to her the prohibition because of his daughter-in-law. If the son of Reuven died, or he divorced her and she married his brother, there is added to her the prohibition of being the wife of his brother. If his brother dies or he divorced her and she married his father’s brother, there is added to her the prohibition of being the wife of his father’s brother. If she merely married and she is a married woman and is menstruating. If Reuven had sexual relations with her while she was married and a menstruating woman, he is liable for her because of all of these prohibitions listed by name.

וכן הבא על אם חמותו – Laban has sexual relations with Dinah, the daughter of Leah his daughter, and he sires a daughter, whose name is Serah; the person (i.e., man) who marries Serah is forbidden to Leah because of the mother of his mother-in-law and because she is the sister of his wife, for Serah his wife and Leah are the daughters of Laban. If Leah is married to the daughter of the husband of Serah,, and becomes his daughter-in-law, and afterwards to his brother, and afterwards to the brother of his father, if the husband of Serah has sexual relations while she is a married woman and a menstruating woman, he is liable for her because of all of the categories mentioned.

ואם חמיו – Reuven has sexual relations with his grandmother, the wife of Laban, the mother of his mother Leah, and he sires a daughter and her name is Dinah, the person who marries Dinah will be forbidden to Leah, the mother of Reuven will be forbidden to him because of [the prohibition] of the mother of his father-in-law and because of the [prohibition] of the sister of his wife, for Dinah, his wife, and Leah, the mother of his father-in-law, both of them are the daughters of the wife of Laban. If she became his daughter-in-law and afterwards the wife of his brother and afterwards the wife of his father’s brother and a married woman and a menstruating woman, he is liable for her because of all of these categories mentioned.

הבא על חמותו חייב עליה כו' – The wife of Laban had two daughters, Leah and Rachel, and one son, whose name is Asher, and the name of Asher’s daughter is Serah, and one came from the marketplace and married Rachel and Yocheved the daughter of Leah and Serah the daughter of Asher, and afterwards, the person who marries these three women has sexual relations with the wife of Laban, he is liable on her account because of his mother-in-law, and the mother of his mother-in-law, and the mother of his father-in-law. Because of his mother-in-law, for she is the mother of Rachel his wife. And because of the mother of his mother-in-law, for she is the mother is Leah his mother-in-law. And because of the mother of his father-in-law, because she is the mother of Asher his father-in-law.

שלשתן שם אחד הם – in one Biblical verse it is written (see Leviticus 18:17 – “Do not uncover the nakedness of a woman and her daughter; nor shall you marry her son’s daughter or her daughter’s daughter and uncover her nakedness: they are kindred; it is depravity”) and one it is not. Therefore, there is no separation of sin-offerings between them. And this is the Halakha (i.e., only one sin-offering).