Leviticus 18:13-17

You shall not uncover the nakedness of your mother’s sister, for she is your mother’s blood relative.

You shall not uncover the nakedness of your father’s brother. You shall not approach his wife; she is your aunt.

You shall not uncover the nakedness of your daughter-in-law. She is your son’s wife; you shall not uncover her nakedness.

You shall not uncover the nakedness of your brother’s wife; it is your brother’s nakedness.

You shall not uncover the nakedness of a woman and of her daughter, nor shall you take her son’s daughter or her daughter’s daughter, to uncover her nakedness; they are blood relatives. It is an outrageous sin.