[Machine] The Prophet ﷺ came to us in Medina while we were selling goods. He said, "If it is a hand-to-hand transaction, then there is no problem with it. And if it involves any violation or wrongdoing, then it is usury." Then he told me to bring Zaid ibn Arqam, so I went to him and asked him the same question, and he replied with the same answer.  

قَدِمَ عَلَيْنَا النَّبِيُّ ﷺ الْمَدِينَةَ وَنَحْنُ نَبِيعُ هَذَا الْبَيْعَ فَقَالَ «مَا كَانَ يَدًا بَيْدٍ فَلَا بَأْسَ بِهِ وَمَا كَانَ نَسِيئَةً فَهُوَ رَبًّا» ثُمَّ قَالَ لِي ائْتِ زَيْدَ بْنَ أَرْقَمَ فَأَتَيْتُهُ فَسَأَلْتُهُ فَقَالَ مِثْلَ ذَلِكَ  

" I asked Al-Bara bin 'Azib and Zaid bin Arqam and they said: 'We were merchants at the time of the Messenger of Allah and we asked the Prophet of Allah about money exchange. He said: "If it is done hand to hand there is nothing wrong with it, but if it is done on credit then it is not right." (Using translation from Nasāʾī 4576)  

أَخْبَرَنِي عَمْرُو بْنُ دِينَارٍ وَعَامِرُ بْنُ مُصْعَبٍ أَنَّهُمَا سَمِعَا أَبَا الْمِنْهَالِ يَقُولُ سَأَلْتُ الْبَرَاءَ بْنَ عَازِبٍ وَزَيْدَ بْنَ أَرْقَمَ فَقَالَا كُنَّا تَاجِرَيْنِ عَلَى عَهْدِ رَسُولِ اللهِ ﷺ فَسَأَلْنَا رَسُولَ اللهِ ﷺ عَنِ الصَّرْفِ فَقَالَ «إِنْ كَانَ يَدًا بَيْدٍ فَلَا بَأْسَ وَإِنْ كَانَ نَسِيئَةً فَلَا يَصْلُحُ»  

"I asked Al-Bara bin 'Azib about money exchange. He said: 'Ask Zaid bin Arqam, for he is better than me and more knowledgeable.' So I asked Zaid and he said: 'Ask Al-Bara for he is better than me and more knowledgeable.' And they both said: 'The Messenger of Allah forbade (selling) silver for gold on credit."' (Using translation from Nasāʾī 4577)  

سَلِ الْبَرَاءَ؛ فَإِنَّهُ خَيْرٌ مِنِّي وَأَعْلَمُ فَقَالَا جَمِيعًا نَهَى رَسُولُ اللهِ ﷺ عَنِ الْوَرِقِ بِالذَّهَبِ دَيْنًا