ولا تجوز الشركة ولا التولية في المسلم فيه قبل قبضه
Translation: Partnership or tawliyah in the salam goods is not permitted before they are received.
A salam buyer who has contracted for 300 kg of rice possesses a claim against the seller until delivery, not rice already received and identified. The buyer may not treat that undelivered salam commodity as ordinary possessed inventory for resale to a third party.
The chapter’s restrictions on partnership and tawliyah likewise concern onward dealing in that undelivered salam entitlement. After actual receipt, any new contract needs to satisfy the applicable rules of sale.