Messenger of Allah ﷺ forbade (1) the meeting of the caravan (of goods) on the way, (2) and that a residing person buys for a bedouin, (3) and that a woman stipulates the divorce of the wife of the would-be husband, (4) and that a man tries to cause the cancellation of a bargain concluded by another. He also forbade An-Najsh (see Hadith 824) and that one withholds the milk in the udder of the animal so that he may deceive people on selling it.  

نَهَى رَسُولُ اللَّهِ ﷺ عَنِ التَّلَقِّي وَأَنْ يَبْتَاعَ الْمُهَاجِرُ لِلأَعْرَابِيِّ وَأَنْ تَشْتَرِطَ الْمَرْأَةُ طَلاَقَ أُخْتِهَا وَأَنْ يَسْتَامَ الرَّجُلُ عَلَى سَوْمِ أَخِيهِ وَنَهَى عَنِ النَّجْشِ وَعَنِ التَّصْرِيَةِ