(16) باب النَّهْىِ عَنْ بَيْعِ الْوَرِقِ، بِالذَّهَبِ دَيْنًا
Abu Minhal reported:
My partner sold silver to be paid in the (Hajj) season or (in the days of) Hajj. He (my partner) came to me and informed me, and I said to him: Such transaction is not desirable. He said: I sold it in the market (on loan) but nobody objected to this. I went to al-Bara' b. 'Azib and asked him, and he said: Allah's Apostle (ﷺ) came to Medina and we made such transaction, whereupon he said: In case the payment is made on the spot, there is no harm in it, and in case (it is 'sold) on loan, it is usury. You better go to Zaid b. Arqam, for he is a greater trader than I; so I went to him and asked him, and he said like it.
Reference: Sahih Muslim 1589 a
In-book reference: Book 22, Hadith 110
USC-MSA web (English) reference(deprecated numbering scheme): Book 10, Hadith 3859