Leviticus 27:16-18

16“If a person gives part of a field to the Lord as something holy, its value will be based on the seed planted on it. Ground planted with 2 quarts of barley will be worth 20 ounces of silver.

17If you give your field in the jubilee year, it will have its full value.

18But if you give the field after the jubilee year, the priest will estimate its value based on the number of years left until the next jubilee year.