حَدَّثَنَا مُحَمَّدُ بْنُ عُبَيْدٍ، حَدَّثَنَا مُحَمَّدُ بْنُ ثَوْرٍ، عَنْ مَعْمَرٍ، عَنِ ابْنِ طَاوُسٍ، عَنْ أَبِيهِ، عَنِ ابْنِ عَبَّاسٍ، قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم أَنْ يَبِيعَ حَاضِرٌ لِبَادٍ ‏.‏ فَقُلْتُ مَا يَبِيعُ حَاضِرٌ لِبَادٍ قَالَ لاَ يَكُونُ لَهُ سِمْسَارًا ‏.‏

Narrated Anas ibn Malik

The Prophet (ﷺ) said: A townsman must not sell for a man from the desert, even if he is his brother or father.

Abu Dawud said: Anas b. Malik said: It was said: A townsman must not sell for a man from the desert. This phrase carries a broad meaning. It means that the (the townsman) must not sell anything for him or buy anything for him.