[Machine] The Messenger of Allah ﷺ passed by some food in the market of the city. He was amazed by its beauty, so the Messenger of Allah ﷺ put his hand in it and took out something that was not visible. He frowned at the food vendor and then said, "There should be no cheating among Muslims. Whoever deceives us is not one of us."  

أَنَّ رَسُولَ اللَّهِ ﷺ مَرَّ بِطَعَامٍ بِسُوقِ الْمَدِينَةِ فَأَعْجَبَهُ حُسْنُهُ فَأَدْخَلَ رَسُولُ اللَّهِ ﷺ يَدَهُ فِي جَوْفِهِ فَأَخْرَجَ شَيْئًا لَيْسَ كَالظَّاهِرِ فَأَفَّفَ لِصَاحِبِ الطَّعَامِ ثُمَّ قَالَ «لَا غِشَّ بَيْنَ الْمُسْلِمِينَ مَنْ غَشَّنَا فَلَيْسَ مِنَّا»  

"عَنِ ابْنِ عُمَرَ أَنَّ رَسُولَ الله ﷺ مَرَّ بِسُوقِ الْمَدِينَةِ عَلَى طَعَامٍ أَعْجَبَهُ، فَأَدْخَلَ يَدَهُ فِى جَوْف الطَّعَامِ فَأَخْرَجَ شَيْئًا لَيْسَ بالظَّاهِرِ فَأَفَّفَ رَسُولُ الله ﷺ بِصَاحِبِ الطَّعَامِ، ثُمَّ نَادَى: أَيُّها النَّاسُ لاَ غِشَّ بَيْنَ الْمُسْلِمَينَ، مَنْ غَشَّنَا فَلَيْسَ مِنَّا".