We were forbidden that a townsman should sell for a man of the desert, even if he is his brother or father.  

أَنْ يَبِيعَ حَاضِرٌ لِبَادٍ وَإِنْ كَانَ أَخَاهُ أَوْ أَبَاهُ  

the Prophet forbade a town-dweller to sell for a desert- dweller, even if he was his father or brother. (Sahih )  

أَنَّ النَّبِيَّ ﷺ نَهَى أَنْ يَبِيعَ حَاضِرٌ لِبَادٍ وَإِنْ كَانَ أَبَاهُ أَوْ أَخَاهُ  

"It was forbidden to us for a town-dweller to sell for a desert-dweller, even if he was his father or brother." (Sahih )  

أَنْ يَبِيعَ حَاضِرٌ لِبَادٍ وَإِنْ كَانَ أَخَاهُ أَوْ أَبَاهُ  

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.  

أَنَّ النَّبِيَّ ﷺ قَالَ لاَ يَبِيعُ حَاضِرٌ لِبَادٍ وَإِنْ كَانَ أَخَاهُ أَوْ أَبَاهُ  

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. (Using translation from Abū Dāʾūd 3440)   

عَنِ النَّبِيِّ ﷺ قَالَ لَا يَبِيعُ حَاضِرٌ لِبَادٍ وَإنْ كَانَ أَخَاهُ أَوْ أَبَاهُ  

"لا يَبِيع حَاضِرٌ لِبَادٍ، وَإِنْ كَانَ أَخَاهُ أَوْ أَبَاهُ".  

" نُهِينَا أنْ يَبِيعَ حَاضِرٌ لِبَاد وَإنْ كَانَ أبَاهُ أوْ أخَاهُ لأبِيهِ وَأُمِّهِ ".