Leviticus 25:10, 13, 28

Set this year apart as holy, a time to proclaim freedom throughout the land for all who live there. It will be a jubilee year for you, when each of you may return to the land that belonged to your ancestors and return to your own clan.

In the Year of Jubilee each of you may return to the land that belonged to your ancestors.

But if the original owner cannot afford to buy back the land, it will remain with the new owner until the next Year of Jubilee. In the jubilee year, the land must be returned to the original owners so they can return to their family land.