Exodus 22:30 References
30 "aYou shall do the same with your oxen and with your sheep. It shall be with its mother seven days; bon the eighth day you shall give it to Me.
a Deuteronomy 15:19, Leviticus 22:27
19 "aYou shall consecrate to the Lord your God all the firstborn males that are born of your herd and of your flock; you shall not work with the firstborn of your herd, nor shear the firstborn of your flock.