Leviticus 15:28-30 - Purity Regulations From Female Bodily Discharges
28 " 'And if she is clean from her body fluid discharge, then she shall count for herself seven days, and afterward she becomes clean. 29 And on the eighth day she shall take for herself two turtledoves or two {young doves}, and she shall bring them to the priest at [the] tent of assembly's entrance. 30 And the priest shall {sacrifice} the one [as] a sin offering and the {other} [as] a burnt offering, and so the priest shall make atonement for her {before} Yahweh from her unclean body fluid discharge.'