During the time of the Messenger of Allah ﷺ a man used to buy (goods), and he was weak in his intellect. His people came to the Prophet of Allah ﷺ and said: Prophet of Allah, stop so-and-so (to make a bargain) for he buys (goods), but he is weak in his intellect. So the Prophet ﷺ called on him and forbade him to make a bargain. He said: Prophet of Allah, I cannot keep away myself from business transactions. Thereupon the Messenger of Allah ﷺ said: If you cannot give up making a bargain , then say: Take , and give, and there is no attempt to deceive. (Using translation from Abū Dāʾūd 3501)  

أَنَّ رَجُلًا عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ كَانَ يُبَايعُ وَفِي عُقْدَتِهِ ضَعْفٌ فَأَتَى أَهْلُهُ نَبِيَّ اللَّهِ ﷺ فَقَالُوا يَا نَبِيَّ اللَّهِ احْجُرْ عَلَى فُلَانٍ فَإِنَّهُ يُبَايعُ وَفِي عُقْدَتِهِ ضَعْفٌ فَدَعَاهُ نَبِيُّ اللَّهِ ﷺ فَنَهَاهُ عَنِ الْبَيْعِ فَقَالَ يَا نَبِيَّ اللَّهِ لَا أَصْبِرْ عَنِ الْبَيْعِ فَقَالَ نَبِيُّ اللَّهِ «إِنْ كُنْتَ غَيْرَ تَارِكٍ لِلْبَيْعِ فَقُلْ هَاءً وَهَاءً وَلَا خِلَابَةَ»  

During the time of the Messenger of Allah ﷺ a man used to buy (goods), and he was weak in his intellect. His people came to the Prophet of Allah ﷺ and said: Prophet of Allah, stop so-and-so (to make a bargain) for he buys (goods), but he is weak in his intellect. So the Prophet ﷺ called on him and forbade him to make a bargain. He said: Prophet of Allah, I cannot keep away myself from business transactions. Thereupon the Messenger of Allah ﷺ said: If you cannot give up making a bargain , then say: Take , and give, and there is no attempt to deceive. (Using translation from Abū Dāʾūd 3501)   

أَنَّ رَجُلًا كَانَ يَبْتَاعُ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ وَكَانَ فِي عُقْدَتِهِ ضَعْفٌ فَجَاءَ أَهْلُهُ إِلَى النَّبِيِّ ﷺ فَقَالُوا يَا رَسُولَ اللَّهِ احْجُرْ عَلَى فُلَانٍ فَإِنَّهُ يَبْتَاعُ وَفِي عُقْدَتِهِ ضَعْفٌ فَدَعَاهُ النَّبِيُّ ﷺ فَنَهَاهُ عَنِ الْبَيْعِ فَقَالَ يَا نَبِيَّ اللَّهِ إِنِّي لَا أَصْبِرُ عَنِ الْبَيْعِ فَقَالَ ﷺ «إِنْ كُنْتَ غَيْرَ تَارِكٍ الْبَيْعَ فَقُلْ هَاءً وَهَاءً وَلَا خِلَابَةَ»  

A man mentioned to the Messenger of Allah ﷺ that he was deceived in a business transaction, whereupon Messenger of Allah ﷺ said: When you enter into a transaction, say: There should be no attempt to deceive. (Using translation from Muslim 1533a)  

أَنَّهُ سَمِعَ ابْنَ عُمَرَ يَقُولُ ذُكِرَ رَجُلٌ لِرَسُولِ اللَّهِ ﷺ أَنَّهُ يُخْدَعُ فِي الْبُيُوعِ فَقَالَ لَهُ «مَنْ بَايَعْتَ فَقُلْ لَا خِلَابَةَ» وَكَانَ إِذَا بَايَعَ يَقُولُ لَا خِلَابَةَ  

A man told the Messenger of Allah ﷺ that he was being deceived in business transactions. The Messenger of Allah ﷺ then said: When you make a bargain, say: There is no attempt to deceive. So when the man made a bargain, he said: There is no attempt to deceive. (Using translation from Abū Dāʾūd 3500)   

أَنَّ رَجُلًا ذُكِرَ لِرَسُولِ اللَّهِ ﷺ أَنَّهُ يَنْخَدِعُ فِي الْبُيُوعِ فَقَالَ رَسُولُ اللَّهِ ﷺ «إِذَا بِعْتَ فَقُلْ لَا خِلَابَةَ» قَالَ فَكَانَ الرَّجُلُ إِذَا ابْتَاعَ يَقُولُ لَا خِلَابَةَ