"When a bull or a sheep or a goat is born, it shall be seven days with its mother; and from the eighth day and thereafter it shall be accepted as an offering made by fire to the LORD.
Leviticus 22:27
Surrounding context
22:26 And the LORD spoke to Moses, saying:
22:27 "When a bull or a sheep or a goat is born, it shall be seven days with its mother; and from the eighth day and thereafter it shall be accepted as an offering made by fire to the LORD.
22:28 Whether it is a cow or ewe, do not kill both her and her young on the same day.