Leviticus 12:6-7

And when the days are ended for making her clean for a son or a daughter, let her take to the priest at the door of the Tent of meeting, a lamb of the first year for a burned offering and a young pigeon or a dove for a sin-offering: And the priest is to make an offering of it before the Lord and take away her sin, and she will be made clean from the flow of her blood. This is the law for a woman who gives birth to a male or a female.