Leviticus 22:26-28

Complete Jewish Bible

²⁶ Adonai said to Moshe, ²⁷ “When a bull, sheep or goat is born, it is to stay with its mother for seven days; but from the eighth day on, it may be accepted for an offering made by fire to Adonai. ²⁸ However, no animal is to be slaughtered together with its young on the same day, neither cow nor ewe.