Deuteronomy 15:16

13 And when thou dost send him away free from thee, thou dost not send him away empty;

14 thou dost certainly encircle him out of thy flock, and out of thy threshing-floor, and out of thy wine-vat; [of] that which Jehovah thy God hath blessed thee thou dost give to him,

15 and thou hast remembered that a servant thou hast been in the land of Egypt, and Jehovah thy God doth ransom thee; therefore I am commanding thee this thing to-day.

16 `And it hath been, when he saith unto thee, I go not out from thee -- because he hath loved thee, and thy house, because [it is] good for him with thee --

17 then thou hast taken the awl, and hast put [it] through his ear, and through the door, and he hath been to thee a servant age-during; and also to thy handmaid thou dost do so.

18 `It is not hard in thine eyes, in thy sending him away free from thee; for the double of the hire of an hireling he hath served thee six years, and Jehovah thy God hath blessed thee in all that thou dost.

19 `Every firstling that is born in thy herd and in thy flock -- the male thou dost sanctify to Jehovah thy God; thou dost not work with the firstling of thine ox, nor shear the firstling of thy flock;