Does the act of the agent paying the price of the commodity to the seller, which the agent then recovers from the buyer along with the shipping fee, constitute a loan that yields benefit (qardh jarr naf’an), or does it have a different ruling?

The condition that the seller pays the price on behalf of the buyer, along with a delivery contract for the merchandise, is considered a loan and a lease (ijara). This is impermissible because it is a loan that draws a benefit (salaf jarr manfa'ah). The Malikis, Shafi'is, and Hanbalis have explicitly stated the impermissibility of stipulating a sale, purchase, or lease with a loan contract, due to the means it provides for profiting from a loan. The buyer's lack of explicit request for this does not affect the ruling, as long as the seller stipulates receiving the price and the owner of the merchandise is aware of it.