Leviticus 12:5-7

But if she bear a maid-child, then she shall be unclean two weeks, as in her impurity; and she shall continue in the blood of her purifying threescore and six days. And when the days of her purifying are fulfilled, for a son, or for a daughter, she shall bring a lamb a year old for a burnt-offering, and a young pigeon, or a turtle-dove, for a sin-offering, unto the door of the tent of meeting, unto the priest: and he shall offer it before Jehovah, 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.