Leviticus 18:17-19

English Standard Version

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. ¹⁸ And you shall not take a woman as a ^(A)rival wife to her sister, uncovering her nakedness ^(B)while her sister is still alive.

^19 (C)“You shall not approach a woman to uncover her nakedness while she is in her menstrual uncleanness.