16. When a man has an emission of semen, he must bathe his whole body, and he remains unclean until evening.
17. Anything made of cloth or leather on which the semen falls must be washed, and it remains unclean until evening.
18. After sexual intercourse both the man and the woman must have a bath, and they remain unclean until evening.
19. When a woman has her monthly period, she remains unclean for seven days. Anyone who touches her is unclean until evening.
20. Anything on which she sits or lies during her monthly period is unclean.
21-23. Anyone who touches her bed or anything on which she has sat must wash his clothes and have a bath, and he remains unclean until evening.