Leviticus 15:7-9

New Century Version

⁷ Anyone who touches the person who discharges the body fluid must wash his clothes and bathe in water; he will be unclean until evening.

⁸ “‘If the person who discharges the body fluid spits on someone who is clean, that person must wash his clothes and bathe in water; he will be unclean until evening. ⁹ Everything on which the person who is unclean sits when riding will become unclean.