"Bilal brought some Bami dates to the Messenger of Allah and he said: 'What is this? 'He said: 'I bought a Sa of them for two Sas. The Messenger of Allah said: "O! The essence of Riba, do not approach it."' (Using translation from Nasāʾī 4557)
أَتَى بِلَالٌ رَسُولَ اللهِ ﷺ بِتَمْرٍ بَرْنِيٍّ فَقَالَ «مَا هَذَا؟» فَقَالَ اشْتَرَيْتَهُ صَاعًا بِصَاعَيْنِ فَقَالَ رَسُولُ اللهِ ﷺ «أَوِّهْ عَيْنُ الرِّبَا لَا تَقْرَبْهُ»