'Purchaser' in the Bible

But if he cannot obtain enough to repay him, what he sold will remain in the possession of its purchaser until the Year of Jubilee. It is to be released at the Jubilee, so that he may return to his property.

If it is not redeemed by the end of a full year, then the house in the walled city is permanently transferred to its purchaser throughout his generations. It is not to be released on the Jubilee.