Leviticus 18:15-17

American Standard Version

¹⁵ Thou shalt not uncover the nakedness of thy daughter-in-law: she is thy son’s wife; thou shalt not uncover her nakedness. ¹⁶ Thou shalt not uncover the nakedness of thy brother’s wife: it is thy brother’s nakedness. ¹⁷ Thou shalt not uncover the nakedness of a woman and her daughter; thou shalt not take her son’s daughter, or her daughter’s daughter, to uncover her nakedness; they are near kinswomen: it is ^[a]wickedness.