'Buyer' in the Bible
If he's not able to redeem it back for himself, then what he sold is to remain in the hand of the buyer until the year of jubilee. In the jubilee, it is to be returned so he may return to his property.
"The day has arrived. Don't let the buyer rejoice, nor the seller lament, because wrath is coming to attack the entire multitude. The seller won't regain what he has sold while the crowd remains alive, because the vision concerning the entire multitude won't be annulled. No person will be able to survive because of the sin in his life.