Leviticus 22:25-27

Amplified Bible, Classic Edition

²⁵ Neither shall you offer as the bread of your God any such animals obtained from a foreigner [who may wish to pay respect to the true God], because their defects render them unfit; there is a blemish in them; they will not be accepted for you.

²⁶ And the Lord said to Moses,

²⁷ When a bull or a sheep or a goat is born, it shall remain for seven days with its mother; and from the eighth day on it shall be accepted for an offering made by fire to the Lord.