You must not have sexual intercourse with your daughter-in-law; she is your son's wife. You must not have intercourse with her.

If a man has sexual intercourse with his daughter-in-law, both of them must be put to death. They have committed perversion; their blood guilt is on themselves.

You must not have sexual intercourse with both a woman and her daughter; you must not take as wife either her son's daughter or her daughter's daughter to have intercourse with them. They are closely related to her -- it is lewdness.

You must not expose the nakedness of your son's daughter or your daughter's daughter by having sexual intercourse with them, because they are your own nakedness.

You must not have sexual intercourse with your sister, whether she is your father's daughter or your mother's daughter, whether she is born in the same household or born outside it; you must not have sexual intercourse with either of them.