Leviticus 27:17-19

New American Standard Bible

¹⁷ If he consecrates his field as of the year of jubilee, according to your assessment it shall stand. ¹⁸ If he consecrates his field after the jubilee, however, then the priest shall calculate the price for ^[a]him ^[b]proportionate to the years that are left until the year of jubilee; and it shall be deducted from your assessment. ¹⁹ If the one who consecrates it should ever want to redeem the field, then he shall add a fifth of your assessment price to it, so that it may belong to him.