23 Cursed be he that lieth with his mother in law. And all the people shall say, Amen.
Deuteronomy 27:23 Cross References - KJV_Cambridge
Leviticus 18:17
17 Thou shalt not uncover the nakedness of a woman and her daughter, neither shalt thou take her son's daughter, or her daughter's daughter, to uncover her nakedness; for they are her near kinswomen: it is wickedness.
Leviticus 20:14
14 And if a man take a wife and her mother, it is wickedness: they shall be burnt with fire, both he and they; that there be no wickedness among you.