Sunan an-Nasa'i 4578
سنن النسائي#4578SahihAbdur-Rahman bin Abi Bakrah narrated that his father said:"The Messenger of Allah forbade selling silver for silver and gold for gold, unless it was of equal amounts. And he told us to sell gold for silver however we wanted, and silver for gold however we wanted
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih Hadith
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 44:130