Leviticus 15:28-30 - Purity Regulations From Female Bodily Discharges
28 But if she shall be cleansed of her issue, then she shall number to herself seven days, and after that she shall be clean. 29 And on the eighth day she shall take to her two turtles, or two young pigeons, and bring them to the priest, to the door of the tabernacle of the congregation. 30 And the priest shall offer the one for a sin-offering, and the other for a burnt-offering; and the priest shall make an atonement for her before the LORD for the issue of her uncleanness.