Let dinar be exchanged for dinar, with no addition on either side and dirham be exchanged for dirham with no addition on either side.
Sahih Muslim Book 22, Hadith 108
← Previous Hadith Gold is to be paid for by gold with equal weight, like for like, and silver is to be paid for by silver with equal weight, like for like. He who made an addition to it or demanded an addition dealt in usury.

Sahih Muslim Book 22, Hadith 107 Next Hadith → This hadith has been narrated on the authority of Musa b. Abu Tamim with the same chain of transmitters.

Sahih Muslim Book 22, Hadith 109