During the time of the Messenger of Allah ﷺ, there was a man whose judgment was weak, yet he continued to engage in buying and selling. His family came to the Prophet ﷺ and said, "Messenger of Allah, place him under interdiction."The Prophet ﷺ called him and forbade him from such transactions.The man said, "Messenger of Allah, I cannot bear to give up trading."The Prophet ﷺ said, "When you make a transaction, say, 'Take it, and no deception.'"
حدثنا أزهر بن مروان حدثنا عبد الأعلى حدثنا سعيد عن قتادة
أن رجلا كان في عهد رسول الله ﷺ في عقدته ضعف وكان يبايع وأن أهله أتوا النبي ﷺ فقالوا يا رسول الله احجر عليه فدعاه النبي ﷺ فنهاه عن ذلك فقال يا رسول الله إني لا أصبر عن البيع فقال إذا بايعت فقل ها ولا خلابة
[Sahih] Reported by Tirmidhi, Sales, Chapter on the ruling concerning one who is deceived in a sale, no. 1250, and Ibn Jarud graded it sahih, no. 568, from the hadith of Abdul-Ala, and he said, hasan sahih gharib. Hakim reported it as well, 4/101, meeting the standard of the two Shaykhs (Bukhari and Muslim), and Dhahabi agreed with him. See also no. 429, 175 regarding its defect, but it has corroborating narrations in Bukhari and Muslim and others. Refer to Muwatta, 2/685, and Sunan Abu Dawud, no. 3500, 3501, Nail al-Maqsud, with my verification.