The Book of Transactions (Kitab Al-Buyu`)

Muslim :: Book 10 : Hadith 3913

Abu Huraira (Allah be pleased with him) said he heard Allah's Messenger (may peace be upon him) as saying: Swearing produces a ready sale for a commodity, but blots out the blessing.

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star