Leviticus 15:27-33

²⁷And anyone touching these things will be unclean, and his clothing will have to be washed and his body bathed in water and he will be unclean till evening.

²⁸But when her flow of blood is stopped, after seven days she will be clean.

²⁹And on the eighth day let her get two doves or two young pigeons and take them to the priest to the door of the Tent of meeting,

³⁰To be offered by the priest, one for a sin-offering and one for a burned offering; and the priest will take away her sin before the Lord on account of her unclean condition.

³¹In this way may the children of Israel be made free from all sorts of unclean conditions, so that death may not overtake them when they are unclean and when they make unclean my holy place which is among them.

³²This is the law for the man who has a flow from his body, or whose seed goes from him so that he is unclean;

³³And for her who has a flow of blood, and for any man or woman who has an unclean flow, and for him who has sex relations with a woman when she is unclean.