Leviticus 27:15-18
English Standard Version
16"If a man dedicates to the Lord part of the land that is his possession, then the valuation shall be in proportion to its seed. A homer of barley seed shall be valued at fifty shekels of silver.
17If he dedicates his field from the year of jubilee, the valuation shall stand,
18but if he dedicates his field after the jubilee, then the priest shall calculate the price according to the years that remain until the year of jubilee, and a deduction shall be made from the valuation.