Deuteronomy 15:19-21

Amplified Bible

¹⁹ “You shall consecrate (set apart) to the Lord your God all the firstborn males that are born of your herd and flock. You shall not work with the firstborn of your herd, nor shear the firstborn of your flock. ²⁰ You and your household shall eat it every year before the Lord your God in the place [for worship] which the Lord chooses. ²¹ But if it has any defect or injury, such as lameness or blindness, or any serious defect, you shall not sacrifice it to the Lord your God.