Leviticus 25:51-53

Darby Translation

⁵¹ If there are yet many years, according unto them shall he return his redemption [money] out of the money that he was bought for;

⁵² and if there remain but few years unto the year of jubilee, then he shall reckon with him; according unto his [remaining] years [of service] shall he give him back his redemption [money].

⁵³ As a hired servant shall he be with him year by year; [his master] shall not rule with rigour over him before thine eyes.