Leviticus 15:19-24

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.

20Anything she lies on during her menstruation will be unclean, and anything she sits on will be unclean.

21Anyone who touches her bed must wash his clothes, bathe in water, and be unclean until evening.

22Anyone who touches any furniture she sits on must wash his clothes, bathe in water, and be unclean until evening.

23If there is something on the bed or on the furniture she sits on, when he touches it he will be unclean until evening,

24and 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.