Narrated byIbn al Musayyab
Arabic (Original)
حَدَّثَنَا إِسْمَاعِيلُ، عَنِ ابْنِ أَبِي عَرُوبَةَ، عَنْ قَتَادَةَ، عَنِ ابْنِ الْمُسَيَّبِ، أَنَّ عُمَرَ، رَضِيَ اللَّهُ عَنْهُ قَالَ إِنَّ مِنْ آخِرِ مَا أُنْزِلَ آيَةُ الرِّبَا وَإِنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ تُوُفِّيَ وَلَمْ يُفَسِّرْهَا فَدَعُوا الرِّبَا وَالرِّيبَةَ.
English Translation
It was narrated from Ibn al Musayyab that `Umar (may Allah be well pleased with him) said: One of the last verses to be revealed was the verse on riba, and when the Beloved Messenger of Allah (blessings and peace of Allah be upon him) departed this world, he had not explained it. So avoid riba and any dubious matter.