Is the seller obligated to accept the price offered by creditors (Ghurama') to keep the goods?

Primary text

The seller is not obligated to accept the price offered by the creditors (Ghurama') in exchange for letting them keep the goods. This is the stated position of Ahmad and the opinion of Shafi'i. The evidence for this is derived from a reported narration (Khabar) and the principle that if a third party offers to settle a debt on behalf of the debtor, the creditor is not compelled to accept it, analogous to when a non-obligated party offers to pay maintenance (Nafaqa) for a husband or when someone else pays what a freed slave (Mukatab) owes his master.