وَعَنْ عُبَادَةَ بْنِ الصَّامِتِ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «لَا تَبِيعُوا الذَّهَبَ بِالذَّهَبِ وَلَا الْوَرِقَ بِالْوَرِقِ وَلَا الْبُرَّ بِالْبُرِّ وَلَا الشَّعِيرَ بِالشَّعِيرِ وَلَا التَّمْرَ بِالتَّمْرِ وَلَا الْمِلْحَ بِالْمِلْحِ إِلَّا سَوَاءً بِسَوَاءٍ عَيْنًا بِعَيْنٍ يَدًا بِيَدٍ وَلَكِنْ بِيعُوا الذَّهَبَ بِالْوَرِقِ وَالْوَرِقَ بِالذَّهَبِ وَالْبُرَّ بِالشَّعِيرِ وَالشَّعِيرَ بِالْبُرِّ وَالتَّمْرَ بِالْمِلْحِ وَالْمِلْحَ بِالتَّمْرِ يَدًا بِيَدٍ كَيْفَ شِئْتُمْ» . رَوَاهُ الشَّافِعِي

‘Ubada b. as-Samit reported God’s Messenger as saying, “Do not sell gold for gold, or silver for silver, or wheat for wheat, or barley for barley, or dates for dates, or salt for salt except equal for equal, kind for kind, payment being made on the spot; but sell gold for silver, silver for gold, wheat for barely, barley for wheat, dates for salt and salt for dates, payment being made on the spot, as you wish.” Shafi'i transmitted it.