Leviticus 27:16-18

16And if a man shall sanctify to the LORD some part of a field of his possession, then thy estimation shall be according to the seed of it: an homer of barley seed shall be valued at fifty shekels of silver.1 17If he shall sanctify his field from the year of jubilee, according to thy estimation it shall stand. 18But if he shall sanctify his field after the jubilee, then the priest shall reckon to him the money according to the years that remain, even to the year of the jubilee, and it shall be abated from thy estimation.