Sayyiduna Abdullah bin Abi Awfa (may Allah be pleased with them both) narrates that a man displayed his merchandise (for sale) and swore by Allah, besides whom there is no god, that he had already been offered such a price for it, which in fact he had not been offered, so as to trap a Muslim (into loss) by it. Upon this, this verse was revealed: "Indeed, those who take a small price in exchange for the covenant of Allah and their oaths."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from al-Awwam bin Hawshab except Muhammad bin al-Hasan, and Wahb bin Baqiyyah is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 7867
Hadith Takhrij«أخرجه البخاري فى «صحيحه» برقم: 2088، 2675، 4551، والحاكم فى «المستدرك» برقم: 2161، والبيهقي فى «السنن الكبرى» برقم: 10907، والبزار فى «مسنده» برقم: 3348»