Exodus:22:29-30
dourh@Exodus:22:29 @ Thou shalt not delay to pay thy tithes and thy firstfruits: thou shalt give the firstborn of thy sons to me.
dourh@Exodus:22:30 @ Thou shalt do the same with the firstborn of thy oxen also and sheep: seven days let it be with its dam, the eighth day thou shalt give it to me.