Deuteronomy 15:19
King James Version
“All the firstling males that come of thy herd and of thy flock thou shalt sanctify unto the LORD thy God: thou shalt do no work with the firstling of thy bullock, nor shear the firstling of thy sheep.”
Context
16And it shall be, if he say unto thee, I will not go away from thee; because he loveth thee and thine house, because he is well with thee;
17Then thou shalt take an aul, and thrust through his ear unto the door, and he shall be thy servant for ever. And also unto thy maidservant thou shalt do likewise.
18It shall not seem hard unto thee, when thou sendest him away free from thee; for he hath been worth a double hired servant in serving thee six years: and the LORD thy God shall bless thee in all that thou doest.
19All the firstling males that come of thy herd and of thy flock thou shalt sanctify unto the LORD thy God: thou shalt do no work with the firstling of thy bullock, nor shear the firstling of thy sheep.
20Thou shalt eat before the LORD thy God year by year in the place which the LORD shall choose, thou and thy household.
21And if there be blemish therein, lame, or blind, any ill blemish, thou shalt not sacrifice it unto the LORD thy God.
22Thou shalt eat it within thy gates: the unclean and the clean alike, as the roebuck, and as the hart.