Leviticus 15:28-30 - Purity Regulations From Female Bodily Discharges
28 "'But if she is cleansed of her discharge, then she shall count to herself seven days, and after that she shall be clean. 29 On the eighth day she shall take two turtledoves, or two young pigeons, and bring them to the priest, to the door of the Tent of Meeting. 30 The priest shall offer the one for a sin offering, and the other for a burnt offering; and the priest shall make atonement for her before Yahweh for the uncleanness of her discharge.