حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ رَجُلاً، ذَكَرَ لِرَسُولِ اللَّهِ صلى الله عليه وسلم أَنَّهُ يُخْدَعُ فِي الْبُيُوعِ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِذَا بَايَعْتَ فَقُلْ لاَ خِلاَبَةَ " . قَالَ فَكَانَ الرَّجُلُ إِذَا بَايَعَ يَقُولُ لاَ خِلاَبَةَ .
Yahya related to me from Malik from Abdullah ibn Dinar fromAbdullah ibn Umar that a man mentioned to the Messenger of Allah, mayAllah bless him and grant him peace, that he was always being cheatedin business transactions. The Messenger of Allah, may Allah bless himand grant him peace, said, "When you enter a transaction, say, 'Notrickery.' So whenever that man entered a transaction, he would say,'No trickery.' " Translation Not Available
Book Ref: Muwatta Imam Malik Book 31 Hadith 1385
Web Ref: Muwatta Imam Malik Book 31 Hadith 99