Leviticus 25:50-52

New American Standard Bible

⁵⁰ He then, with his purchaser, shall calculate from the year when he sold himself to him up to the year of jubilee; and the price of his sale shall correspond to the number of years calculated. It is like the days of a hired worker that he will be with him. ⁵¹ If there are still many years remaining, ^(A)he shall refund part of his purchase price in proportion to them for his own redemption; ⁵² but if few years remain until the year of jubilee, he shall so calculate with him. In proportion to his years he is to refund the amount for his redemption.