If a man lies with a woman during her niddah and exposes her nakedness, he has exposed her flow and she has uncovered the flow of her blood. Both of them are to be cut off from among their people.
He has not eaten at mountain shrines or lifted up his eyes to the idols of the house of Israel. He has not defiled his neighbor’s wife or come near to a woman during niddah .
“Speak to Bnei-Yisrael, instructing: If a woman conceives and bears a male child, then she will be unclean for seven days, as in the days of her niddah she will be unclean.