Leviticus 15:15-17

New Revised Standard Version, Anglicised

¹⁵ The priest shall offer them, one for a sin-offering and the other for a burnt-offering; and the priest shall make atonement on his behalf before the Lord for his discharge.

¹⁶ If a man has an emission of semen, he shall bathe his whole body in water, and be unclean until the evening. ¹⁷ Everything made of cloth or of skin on which the semen falls shall be washed with water, and be unclean until the evening.