If the agent pays the price to the seller and then returns the item due to a defect, what is the legal status of the returned price money in the agent's possession?

Primary text

If the agent pays the price to the seller and returns the item due to a defect, the money received from the seller in return is considered a trust (*amanah*) in the agent's hands. If this money is destroyed while in his possession, the loss falls upon the principal.