Lev Leviticus, chapter Book of Leviticus, chapter 12
And he shall offer it before the LORD, and make atonement for her; and she shall be cleansed from the fountain of her blood. This is the law for her that beareth, whether a male or a female. And if her means suffice not for a lamb, then she shall take two turtle-doves, or two young pigeons: the one for a burnt-offering, and the other for a sin-offering; and the priest shall make atonement for her, and she shall be clean.Lev 5:7