Narrated 'Abdullah bin Umar: Allah's Apostle said, "You should not try to cancel the purchases of one another (to get a benefit thereof), and do not go ahead to meet the caravan (for buying the goods) (but wait) till it reaches the market."
— Sahih Bukhari, Volume 3, Book 34: Sales and Trade, Hadith #374
Narrated 'Abdullah bin Umar: Allah's Apostle said, "You should not try to cancel the purchases of one another (to get a benefit thereof), and do not go ahead to meet the caravan (for buying the goods) (but wait) till it reaches the market."
This hadith is from the book of Sales and Trade in Sahih Bukhari, compiled by Imam al-Bukhari. It is hadith number 374 in book 34 of volume 3.
This hadith is referenced in the following topics: Business Ethics.