Leviticus 12:2; Leviticus 12:5; Leviticus 12:7; Leviticus 22:27; Leviticus 25:45

2 Speak unto the children of Israel, saying , If a woman have conceived seed , and born a man child: then she shall be unclean seven days; according to the days of the separation for her infirmity shall she be unclean .
5 But if she bear a maid child, then she shall be unclean two weeks, as in her separation: and she shall continue in the blood of her purifying threescore and six days.
7 Who shall offer it before the LORD, and make an atonement for her; and she shall be cleansed from the issue of her blood. This is the law for her that hath born a male or a female.
27 When a bullock, or a sheep, or a goat, is brought forth , then it shall be seven days under the dam; and from the eighth day and thenceforth it shall be accepted for an offering made by fire unto the LORD.
45 Moreover of the children of the strangers that do sojourn among you, of them shall ye buy , and of their families that are with you, which they begat in your land: and they shall be your possession.