Leviticus 18:14-16

¹⁴'The nakedness of thy father's brother thou dost not uncover; unto his wife thou dost not draw near; she is thine aunt.

¹⁵'The nakedness of thy daughter-in-law thou dost not uncover; she is thy son's wife; thou dost not uncover her nakedness.

¹⁶'The nakedness of thy brother's wife thou dost not uncover; it is thy brother's nakedness.