If a man marries his sister, whether his father's daughter or his mother's daughter, and they have sexual relations, it is a disgrace. They must be cut off publicly from their people. He has had sexual intercourse with his sister; he will bear his punishment.
If a man sleeps with a menstruating woman and has sexual intercourse with her, he has exposed the source of her [flow], and she has uncovered the source of her blood. Both of them must be cut off from their people.
You must not have sexual intercourse with your mother's sister or your father's sister, for it is exposing one's own blood relative; both people will bear their punishment.
If a man sleeps with his aunt, he has shamed his uncle; they will bear their guilt and die childless.