וְאִ֗ישׁ אֲשֶׁ֨ר יִקַּ֧ח אֶת־אִשָּׁ֛ה וְאֶת־אִמָּ֖הּ זִמָּ֣ה הִ֑וא בָּאֵ֞שׁ יִשְׂרְפ֤וּ אֹתוֹ֙ וְאֶתְהֶ֔ן וְלֹא־תִהְיֶ֥ה זִמָּ֖ה בְּתוֹכְכֶֽם׃
И если мужчина возьмет с женой и ее мать, то это зло: они будут сожжены огнем, и он, и они; чтобы среди вас не было зла.
Bartenura
נושאין על האנוסה – for after he raped or seduced a woman, it is permitted to marry her daughter or her mother or her sister, as it is written (Leviticus 20:14): “If a man marries a woman and her mother, ‘[it is depravity],” in all of them it is sated, “lying with/שכיבה “ but here, it states “לקיחה/takes in marriage,” to inform you that the manner of taking [to wife] is what the Torah forbade.
English Explanation of Mishnah Sanhedrin
The following are burnt: he who has sexual relations with a woman and her daughter, and a priest's adulterous daughter. There is included in [the prohibition of having relations with] a woman and her daughter his own daughter, his daughter’s daughter, his son's daughter, his wife's daughter and the daughter of her daughter or son, his mother-in-law, her mother, and his father-in-law's mother. There are two people who are punished by being burnt: one who has relations with a woman and her daughter (Lev. 20:14) and a priest’s daughter who commits adultery (Lev. 21:9). Our mishnah teaches that the prohibition of having relations with a woman and her daughter includes incestuous relationships, such as having relations with one’s wife and her daughter (whether or not she is his daughter). It also includes granddaughters. In all of these cases the man’s punishment will be execution by burning.
Bartenura
יש בכלל אשה ובתה – that is to say, with a mother and her daughter, it is explicitly written "שריפה"/burning (Leviticus 20:14): “If a man marries a woman and her mother….they shall be put to the fire/"באש תשרפו" …,” and from it we derive that all of these also and it is they are [punished] by burning.