Sunan Abi Dawud
Commercial Transactions (Kitab Al-Buyu) — Hadith #3349
The Messenger of Allah (ﷺ) said: Gold is to be paid for with gold, raw and coined, silver with silver, raw and coined (in equal weight), wheat with wheat in equal measure, barley with barley in equal measure, dates with dates in equal measure, salt by salt with equal measure; if anyone gives more or asks more, he has dealt in usury. But there is no harm in selling gold for silver and silver (for gold), in unequal weight, payment being made on the spot. Do not sell them if they are to be paid for later. There is no harm in selling wheat for barley and barley (for wheat) in unequal measure, payment being made on the spot. If the payment is to be made later, then do not sell them.
Abu Dawud said: This tradition has also been transmitted by Sa’id b. Abi ‘Arubah, Hisham al-Dastawa’i and Qatadah from Muslim b. Yasar through his chain.
Chain Family Tree
7 narrators from originator to compilerHadith Grading
Each grade below reflects one scholar's assessment of the chain of transmission. The grade describes the chain, not the Prophet's words. How we grade
Traditional grade: Sahih