Leviticus 12:5-6

5But if she bears a female child, then she will be unclean for two weeks, as in her niddah , and she is to wait in the blood of purification for 66 days.

6“When the days of her purification are completed for a son or for a daughter, she is to bring to the kohen, at the entrance of the Tent of Meeting, a year old lamb for a burnt offering and a young pigeon or a turtledove, for a sin offering.