Leviticus 15:25-33

25 And the woman when she has an issue of her blood many days out of the time of her separation or if it runs beyond the time of her separation, all the days of the issue of her uncleanness shall be as the days of her separation: she shall be unclean.
26 Every bed upon which she sleeps all the days of her issue shall be unto her as the bed of her separation; and whatever she sits upon shall be unclean, as the uncleanness of her separation.
27 Whoever touches these things shall be unclean and shall wash his clothes and bathe himself in water and be unclean until the evening.
28 But when she is clean 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 unto her two turtledoves or two young pigeons and bring them unto the priest, to the door of the tabernacle of the testimony;
30 and the priest shall offer the one as sin and the other as a burnt offering; and the priest shall reconcile her before the LORD of the issue of her uncleanness.
31 Thus shall ye separate the sons of Israel from their uncleanness; and they shall not die for their uncleanness defiling my tabernacle that is among them.
32 This is the law of the one that has an issue and of him whose seed goes forth from him, causing him to be unclean because of it,
33 and of her that is suffering her menstruation, and of the one that has an issue, male or female, and of the man that lies with an unclean woman.