Muhammad bin Yahya bin Haban reported,

He is my grandfather, Munqidh bin Amr. He was a man who had been struck on the head, and the blow had impaired his speech. Despite this, he would not give up trading, yet he was constantly being cheated. So he came to the Prophet ﷺ and mentioned this to him.The Prophet ﷺ said to him, "When you make a transaction, say, 'No deception.' Then you have the choice for three nights regarding any goods you have purchased. If you are satisfied, keep it, and if you are displeased, return it to its owner."

Azami 5430

Hasan

عن محمد بن يحيى بن حبان قال

هو جدي منقذ بن عمرو- وكان رجلا قد أصابه أمة في رأسه فكسرت لسانه- وكان لايدع على ذلك التجارة، وكان لا يزال يغبن، فأتى النبي ﷺ فذكر ذلك له، فقال له: إذا أنت بايعت فقل: لا خلابة، ثم أنت في كل سلعة ابتعتهابالخيار ثلاث ليال، فإن رضيت فأمسك، وإن سخطت فارددها على صاحبها.

الأعظمي 5430حسن
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Sales
Chapter
Rulings on sales and trade
Section
One who is deceived in buying and selling, what he should say
Numbering
Jami al-Kamil 5430 (2nd edition)
Azami 5430