Leviticus 27:20-25

²⁰But if he has no desire to get it back, or if he has given it for a price to another man, it may not be got back again.

²¹But the field, when it becomes free at the year of Jubilee, will be holy to the Lord, as a field given under oath: it will be the property of the priest.

²²And if a man gives to the Lord a field which he has got for money from another, which is not part of his heritage;

²³Then the value fixed by you up to the year of Jubilee will be worked out for him by the priest, and in that day he will give the amount of your value as holy to the Lord.

²⁴In the year of Jubilee the field will go back to him from whom he got it, that is, to him whose heritage it was.

²⁵And let all your values be based on the shekel of the holy place, that is, twenty gerahs to the shekel.