Leviticus 20:18-20

New American Standard Bible

^18 (A)If there is a man who sleeps with a menstruous woman and uncovers her nakedness, he has exposed her flow, and she has uncovered the flow of her blood; so both of them shall be cut off from among their people. ^19 (B)You shall also not uncover the nakedness of your mother’s sister or of your father’s sister, for such a one has uncovered his ^[a]blood relative; they will bear their guilt. ^20 (C)If there is a man who sleeps with his uncle’s wife, he has uncovered his uncle’s nakedness; they will bear their sin. They will die childless.