(12) باب الْخَدِيعَةِ فِي الْبَيْعِ
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 ) (ID)
Reference (ID): Sunan an-Nasa'i 4484 (ID)
In-book reference (ID): Book 44, Hadith 36 (ID)
English translation (ID): Vol. 5, Book 44, Hadith 4489 (ID)