English translation
2174. Narrated Ibn Shihāb that Malik bin 'Aūs said, "I was in need of change for one-hundred Dīnār. Ṭalḥa bin 'Ubaidullāh called me and we discussed the matter, and he agreed to change (my Dīnār). He took the gold pieces and turned and toppled them with his hands, and then said, "Wait till my storekeeper comes from the forest." Umar was listening to that and said, "By Allāh! You should not separate from Ṭalḥa till you get the money from him, for Allāh's Messenger ﷺ said, 'The selling of gold for gold is Ribā (usury), except if the exchange is from hand to hand and equal in amount, and similarly, the selling of wheat for wheat is Ribā, unless it is from hand to hand and equal in amount, and the selling of barley for barley is usury unless it is from hand to hand and equal in amount, and dates for dates is usury unless it is from hand to hand and equal in amount."