حَدَّثَنَا أَحْمَدُ بْنُ مُحَمَّدِ بْنِ حَنْبَلٍ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنِ الْعَلاَءِ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم مَرَّ بِرَجُلٍ يَبِيعُ طَعَامًا فَسَأَلَهُ ‏"‏ كَيْفَ تَبِيعُ ‏"‏ ‏.‏ فَأَخْبَرَهُ فَأُوحِيَ إِلَيْهِ أَنْ أَدْخِلْ يَدَكَ فِيهِ فَأَدْخَلَ يَدَهُ فِيهِ فَإِذَا هُوَ مَبْلُولٌ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ لَيْسَ مِنَّا مَنْ غَشَّ ‏"‏ ‏.‏

Narrated Abu Hurairah: The Messenger of Allah (PBUH) passed a man who was selling grain. He asked him: How are you selling? He informed him. Revelation them came down to him saying: "Put your hand into it." So he put his hand into it, and felt that it was damp. The Messenger of Allah (PBUH) then said: "He who deceives has nothing to do with us." Translation Not Available

Book Ref: Sunan Abi Dawud Book 24 Hadith 3452
Web Ref:  Sunan Abi Dawud Book 23 Hadith 3445