Leviticus 15:19-33

19 When a woman has her monthly period, she remains unclean for seven days. Anyone who touches her is unclean until evening.
20 Anything on which she sits or lies during her monthly period is unclean.
21 Any who touch her bed or anything on which she has sat must wash their clothes and take a bath, and they remain unclean until evening.
24 If a man has sexual intercourse with her during her period, he is contaminated by her impurity and remains unclean for seven days, and any bed on which he lies is unclean.
25 If a woman has a flow of blood for several days outside her monthly period or if her flow continues beyond her regular period, she remains unclean as long as the flow continues, just as she is during her monthly period.
26 Any bed on which she lies and anything on which she sits during this time is unclean.
27 Any who touch them are unclean and must wash their clothes and take a bath; they remain unclean until evening.
28 After her flow stops, she must wait seven days, and then she will be ritually clean.
29 On the eighth day she shall take two doves or two pigeons to the priest at the entrance of the Tent of the Lord's presence.
30 The priest shall offer one of them as a sin offering and the other as a burnt offering, and in this way he will perform the ritual of purification for her.
31 The Lord told Moses to warn the people of Israel about their uncleanness, so that they would not defile the Tent of his presence, which was in the middle of the camp. If they did, they would be killed.
32 These are the regulations about a man who has a discharge or an emission of semen,
33 a woman during her monthly period, or a man who has sexual intercourse with a woman who is ritually unclean.
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.