Leviticus 6:9

6:9 “Command Aaron and his sons, ‘This is the law of the burnt offering. The burnt offering is to remain on the hearth on the altar all night until morning, and the fire of the altar must be kept burning on it.

Leviticus 12:7

12:7 The priest is to present it before the Lord and make atonement on her behalf, and she will be clean from her flow of blood. This is the law of the one who bears a child, for the male or the female child.