Leviticus 22:26-28

New Century Version

²⁶ The Lord said to Moses, ²⁷ “When an ox, a sheep, or a goat is born, it must stay seven days with its mother. But from the eighth day on, this animal will be accepted as a sacrifice by fire to the Lord. ²⁸ But you must not kill the animal and its mother on the same day, either an ox or a sheep.