Leviticus 12:8

8 If she cannot afford a sheep, she shall take two turtledoves or two pigeons, one for a burnt offering and the other for a sin offering; and the priest shall make atonement on her behalf, and she shall be clean.

Leviticus 12:8 In-Context

6 When the days of her purification are completed, whether for a son or for a daughter, she shall bring to the priest at the entrance of the tent of meeting a lamb in its first year for a burnt offering, and a pigeon or a turtledove for a sin offering.
7 He shall offer it before the Lord, and make atonement on her behalf; then she shall be clean from her flow of blood. This is the law for her who bears a child, male or female.
8 If she cannot afford a sheep, she shall take two turtledoves or two pigeons, one for a burnt offering and the other for a sin offering; and the priest shall make atonement on her behalf, and she shall be clean.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.