It was narrated that Abu Hurairah said:
"I heard Abu Saeed Al-Khudri say: 'A Dirham for a Dirham and a Dinar for a Dinar.' So I said: 'I heard Ibn 'Abbas say something other than that.' He said: 'But I met Ibn 'Abbas and said: "Tell me about what you say concerning exchange is it something that you heard from the Messenger of Allah ﷺ or something that You found in the Book of Allah?" He said: "I did not find it in the Book of Allah, and I did not hear it from the Messenger of Allah; rather Usamah bin Zaid told me that the Messenger of Allah ﷺ said: "Usury is only in credit."[1]

حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنْ عَمْرِو بْنِ دِينَارٍ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ سَمِعْتُ أَبَا سَعِيدٍ الْخُدْرِيَّ، يَقُولُ الدِّرْهَمُ بِالدِّرْهَمِ وَالدِّينَارُ بِالدِّينَارِ . فَقُلْتُ إِنِّي سَمِعْتُ ابْنَ عَبَّاسٍ يَقُولُ غَيْرَ ذَلِكَ . قَالَ أَمَا إِنِّي لَقِيتُ ابْنَ عَبَّاسٍ فَقُلْتُ أَخْبِرْنِي عَنْ هَذَا الَّذِي تَقُولُ فِي الصَّرْفِ أَشَىْءٌ سَمِعْتَهُ مِنْ رَسُولِ اللَّهِ ـ ﷺ ـ أَمْ شَىْءٌ وَجَدْتَهُ فِي كِتَابِ اللَّهِ . فَقَالَ مَا وَجَدْتُهُ فِي كِتَابِ اللَّهِ وَلاَ سَمِعْتُهُ مِنْ رَسُولِ اللَّهِ وَلَكِنْ أَخْبَرَنِي أُسَامَةُ بْنُ زَيْدٍ أَنَّ رَسُولَ اللَّهِ ـ ﷺ ـ قَالَ " إِنَّمَا الرِّبَا فِي النَّسِيئَةِ " .