Is the seller obligated to deliver wool free from impurities?
Chapter on Guaranteed Salaf (Advance Payment) for a Specified Term
Al-Mughni
Book of Sales
Primary text
The seller is obligated to deliver the wool free from thorns (shawk) and dung (ba'r), even if this purity is not explicitly stipulated in the contract. Stipulating it is permissible and serves as mere confirmation.