Leviticus 22:26-28

Revised Standard Version

²⁶ And the Lord said to Moses, ²⁷ “When a bull or sheep or goat is born, it shall remain seven days with its mother; and from the eighth day on it shall be acceptable as an offering by fire to the Lord. ²⁸ And whether the mother is a cow or a ewe, you shall not kill both her and her young in one day.