12 And if your brother, a Hebrew, or a Hebrewess, is sold to you; and serves you six years; then in the seventh year send him liberated from you.
Deuteronomy 15:12 Cross References - ECB
Exodus 21:2-6
2 When you chattelize a Hebrew servant, he serves six years: and in the seventh he goes out gratuitously liberated.
3 If he comes in with his body, he goes out with his body: if he was master of a woman, then his woman goes out with him.
4 If his adoni gives him a woman and she births him sons or daughters; the woman and her children are to her adoni and he goes out with his body.
5 And if in saying, the servant says, I love my adoni, my woman and my sons; I go not out liberated:
6 then his adoni brings him to Elohim; he also brings him to the door or to the door post; and his adoni bores through his ear with an aul; and he serves him eternally.
Leviticus 25:39-41
39 And if your brother by you impoverishes and is sold to you; he serves not the service of a servant:
40 but he becomes with you as a hireling and as a settler; and serves you to the year of jubilee:
41 and then he departs from you - both he and his sons with him and returns to his own family and returns to the possession of his fathers.
Deuteronomy 15:1
Jeremiah 34:14
14 At the end of seven years every man sends away his brother - a Hebrew sold to you - who serves you six years: send him away liberated from you: and your fathers neither hearkened to me, nor spread their ear.