Deuteronomy 15 19
“You shall consecrate to the Lord your God all the firstborn males that are born in your herd and in your flock; you shall not work with the firstborn of your herd, nor shear the firstborn of your flock.
“You shall consecrate to the Lord your God all the firstborn males that are born in your herd and in your flock; you shall not work with the firstborn of your herd, nor shear the firstborn of your flock.