وَحَدَّثَنَا سَلَمَةُ بْنُ شَبِيبٍ، حَدَّثَنَا الْحَسَنُ بْنُ أَعْيَنَ، حَدَّثَنَا مَعْقِلٌ، عَنْ أَبِي قَزَعَةَ، الْبَاهِلِيِّ عَنْ أَبِي نَضْرَةَ، عَنْ أَبِي سَعِيدٍ، قَالَ أُتِيَ رَسُولُ اللَّهِ صلى الله عليه وسلم بِتَمْرٍ فَقَالَ ‏"‏ مَا هَذَا التَّمْرُ مِنْ تَمْرِنَا ‏"‏ ‏.‏ فَقَالَ الرَّجُلُ يَا رَسُولَ اللَّهِ بِعْنَا تَمْرَنَا صَاعَيْنِ بِصَاعٍ مِنْ هَذَا ‏.‏ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ هَذَا الرِّبَا فَرُدُّوهُ ثُمَّ بِيعُوا تَمْرَنَا وَاشْتَرُوا لَنَا مِنْ هَذَا ‏"‏ ‏.‏

Abu Sa'id (Allah be pleased with him) reported: Dates were brought to Allah's Messenger (PBUH), and he said: These dates are not like our dates, whereupon a man said: We sold two sa's of our dates (in order to get) one sa', of these (fine dates), whereupon Allah's Messenger (PBUH) said: That is interest; so return (these dates of fine quality), and get your (inferior dates) ; then sell our dates (for money) and buy for us (with the help of money) such (fine dates). Translation Not Available

Book Ref: Sahih Muslim Book 22 Hadith 3872
Web Ref:  Sahih Muslim Book 10 Hadith 1594 b