What does Leviticus 12:6 mean?

When her time of purification is over, whether for a son or a daughter, she must bring a year-old lamb for a burnt offering and a young pigeon or dove for a sin offering to the entrance of the meeting tent, and give them to the priest. Leviticus 12:6 - Modern Text Bible

(After the waiting period, the mother brings offerings to mark the end of her ritual impurity and to restore her full participation in community worship.)