Malik bin Aws bin Hadathan Nasri said that he was looking to exchange a hundred dinars.He said, "Talha bin Ubaydullah called me over, and we negotiated until he agreed to make the exchange with me. He took the gold and kept turning it over in his hand, then he said, 'Wait until my treasurer comes to me from Ghabah.'"Umar bin Khattab was listening, and he said, "By Allah, do not part from him until you have taken your due from him."Then Umar said, "The Messenger of Allah ﷺ said, 'Gold for silver is usury unless it is hand to hand. Wheat for wheat is usury unless it is hand to hand. Dates for dates is usury unless it is hand to hand. Barley for barley is usury unless it is hand to hand.'"
حدثني يحيى عن مالك
عن مالك بن أوس بن الحدثان النصري أنه التمس صرفا بمائة دينار قال فدعاني طلحة بن عبيد الله فتراوضنا حتى اصطرف مني وأخذ الذهب يقلبها في يده ثم قال حتى يأتيني خازني من الغابة وعمر بن الخطاب يسمع فقال عمر والله لا تفارقه حتى تأخذ منه ثم قال قال رسول الله ﷺ الذهب بالورق ربا إلا هاء وهاء والبر بالبر ربا إلا هاء وهاء والتمر بالتمر ربا إلا هاء وهاء والشعير بالشعير ربا إلا هاء وهاء