Leviticus 18:17; Leviticus 20:14

17 You shall not uncover the nakedness of a woman and of her daughter, and you shall not take her son's daughter or her daughter's daughter to uncover her nakedness; they are relatives; it is depravity.


14 gIf a man takes a woman and her mother also, it is depravity; he and they shall be burned with fire, that there may be no depravity among you.