A town dweller should not buy goods for a desert dweller and charge commission as a broker

وَكَرِهَهُ ابْنُ سِيرِينَ وَإِبْرَاهِيمُ لِلْبَائِعِ وَالْمُشْتَرِي، وَقَالَ إِبْرَاهِيمُ إِنَّ الْعَرَبَ تَقُولُ بِعْ لِي ثَوْبًا. وَهْيَ تَعْنِي الشِّرَاءَ.Ibn Sirin and Ibrahim disliked (working as a broker for a desert dweller) whether as a seller or a buyer. Ibrahim said, "Arabs use the word 'to buy' in the meaning of 'to sell'."