Leviticus 18:15 KJV
Thou shalt not uncover the nakedness of thy daughter in law: she is thy son’s wife; thou shalt not uncover her nakedness.
Leviticus 18:15, King James Version
In context
14 Thou shalt not uncover the nakedness of thy father’s brother, thou shalt not approach to his wife: she is thine aunt.
15 Thou shalt not uncover the nakedness of thy daughter in law: she is thy son’s wife; thou shalt not uncover her nakedness.
16 Thou shalt not uncover the nakedness of thy brother’s wife: it is thy brother’s nakedness.