Leviticus 15:18-20

Christian Standard Bible

¹⁸ If a man sleeps with a woman and has an emission of semen, both of them are to bathe with water, and they will remain unclean until evening.^(A)

¹⁹ “When a woman has a discharge, and it consists of blood from her body, she will be unclean because of her menstruation^(B) for seven days. Everyone who touches her will be unclean until evening. ²⁰ Anything she lies on during her menstruation will become unclean, and anything she sits on will become unclean.