Narrated by:Abu Hamra' said
It was narrated that Abu Hamra' said:"I saw the Messenger of Allah (ﷺ) pass by a man having food in a vessel. He put his hand in it and said: 'Perhaps you are cheating. Whoever cheats us is not one of us."'
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا أَبُو نُعَيْمٍ، حَدَّثَنَا يُونُسُ بْنُ أَبِي إِسْحَاقَ، عَنْ أَبِي دَاوُدَ، عَنْ أَبِي الْحَمْرَاءِ، قَالَ رَأَيْتُ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ مَرَّ بِجَنَبَاتِ رَجُلٍ عِنْدَهُ طَعَامٌ فِي وِعَاءٍ فَأَدْخَلَ يَدَهُ فِيهِ فَقَالَ " لَعَلَّكَ غَشَشْتَهُ مَنْ غَشَّنَا فَلَيْسَ مِنَّا " .
IbnMaja
The Chapters on Business Transactions • Hadith 2225