Leviticus 18:15 in the King James Version
Thou shalt not uncover the nakedness of thy daughter in law: she is thy son’s wife; thou shalt not uncover her nakedness.
Context
14 “‘You shall not uncover the nakedness of your father’s brother. You shall not approach his wife. She is your aunt.
15 “‘You shall not uncover the nakedness of your daughter-in-law. She is your son’s wife. You shall not uncover her nakedness.
16 “‘You shall not uncover the nakedness of your brother’s wife. It is your brother’s nakedness.