Sahih Bukhari | Volume 3 | Hadith Number 887

Narrated by Abu Huraira
Allah's Apostle forbade: 1. The meeting of the caravan (of goods) on the way.

2. A residing person buys for a bedouin.

3. A woman stipulates the divorce of the wife of the would-be husband.

4. 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.