Leviticus 15:19

Female Bodily Discharges

15:19 “‘When a woman has a discharge and her discharge is blood from her body, she is to be in her menstruation seven days, and anyone who touches her will be unclean until evening.

Leviticus 15:24

15:24 and if a man actually has sexual intercourse with her so that her menstrual impurity touches him, then he will be unclean seven days and any bed he lies on will be unclean.