Leviticus 22:27-33

²⁷When 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.

²⁸And whether it be cow or ewe, ye shall not kill it and her young both in one day.

²⁹And when ye will offer a sacrifice of thanksgiving unto the Lord, offer it at your own will.

³⁰On the same day it shall be eaten up; ye shall leave none of it until the morrow: I am the Lord.

³¹Therefore shall ye keep my commandments, and do them: I am the Lord.

³²Neither shall ye profane my holy name; but I will be hallowed among the children of Israel: I am the Lord which hallow you,

³³that brought you out of the land of Egypt, to be your God: I am the Lord.