Leviticus 15:13-15

13And when he that hath an issue is cleansed of his issue, then he shall number to himself seven days for his cleansing, and wash his clothes; and he shall bathe his flesh in running water, and shall be clean. 14And on the eighth day he shall take to him two turtle-doves, or two young pigeons, and come before Jehovah unto the door of the tent of meeting, and give them unto the priest: 15and the priest shall offer them, the one for a sin-offering, and the other for a burnt-offering; and the priest shall make atonement for him before Jehovah for his issue.