Leviticus 18:19

18:19 “‘You must not approach a woman in her menstrual impurity to have sexual intercourse with her.

Leviticus 20:18

20:18 If a man has sexual intercourse with a menstruating woman and uncovers her nakedness, he has laid bare her fountain of blood and she has exposed the fountain of her blood, so both of them must be cut off from the midst of their people.

tn Heb “in the menstruation of her impurity”; NIV “during the uncleanness of her monthly period.”

tn Heb “and the two of them.”