Leviticus 12:6, 8

‘When the days of her purification are completed, whether for a son or for a daughter, she shall bring to the priest at the doorway of the Tent of Meeting a one year old lamb as a burnt offering and a young pigeon or a turtledove as a sin offering

If she cannot afford a lamb then she shall take two turtledoves or young pigeons, one as a burnt offering, the other as a sin offering; the priest shall make atonement for her, and she will be clean.’ ” [Luke 2:22, 24]