Leviticus 18:17-19

Darby Translation

¹⁷ The nakedness of a woman and her daughter shalt thou not uncover; thou shalt not take her son's daughter, nor her daughter's daughter, to uncover her nakedness: they are her near relations: it is wickedness.

¹⁸ And thou shalt not take a wife to her sister, to vex her, to uncover her nakedness beside her, during her life.

¹⁹ And thou shalt not approach a woman in the separation of her uncleanness to uncover her nakedness.