Cheating When Trading

It was narrated from Ibn 'Umar that:

a man told the Messenger of Allah that he was always being cheated. The Messenger of Allah said to him: "When you make a deal, say: There is no intention of cheating" So, whenever the man engages in a deal he says, 'There is no intention of cheating." "(Sahih )

أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَجُلاً، ذَكَرَ لِرَسُولِ اللَّهِ صلى الله عليه وسلم أَنَّهُ يُخْدَعُ فِي الْبَيْعِ فَقَالَ لَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏

‏ إِذَا بِعْتَ فَقُلْ لاَ خِلاَبَةَ ‏

‏ ‏.‏ فَكَانَ الرَّجُلُ إِذَا بَاعَ يَقُولُ لاَ خِلاَبَةَ ‏.‏

It was narrated from Anas that:

there was a man whose mental faculties were lacking, and he used to buy and sell. His family came to the Prophet (ﷺ) and said: "O Prophet (ﷺ) of Allah stop him." So the Prophet (ﷺ) of Allah called him, and told him not to do that. He said: "O Prophet (ﷺ) of Allah, I cannot bear to be away from business," He said "If you engaged in a deal then say: 'There is no intention to deceive. "' (Sahih )

أَخْبَرَنَا يُوسُفُ بْنُ حَمَّادٍ، قَالَ حَدَّثَنَا عَبْدُ الأَعْلَى، عَنْ سَعِيدٍ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، أَنَّ رَجُلاً، كَانَ فِي عُقْدَتِهِ ضَعْفٌ كَانَ يُبَايِعُ وَأَنَّ أَهْلَهُ أَتَوُا النَّبِيَّ صلى الله عليه وسلم فَقَالُوا يَا نَبِيَّ اللَّهِ احْجُرْ عَلَيْهِ ‏.‏ فَدَعَاهُ نَبِيُّ اللَّهِ صلى الله عليه وسلم فَنَهَاهُ فَقَالَ يَا نَبِيَّ اللَّهِ إِنِّي لاَ أَصْبِرُ عَنِ الْبَيْعِ ‏.‏ قَالَ ‏

‏ إِذَا بِعْتَ فَقُلْ لاَ خِلاَبَةَ ‏

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