PROHIBITION OF TAKING OATH IN BUSINESS TRANSACTION(SAHIH HADITH MUSLIM)
Friday, April 4th, 2008Chapter# 48, Book 10, Number 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.
Book 10, Number 3914:
Abu Qatada al-Ansari (Allah be pleased with him) reported he heard Allah’s Messenger (may peace be upon him) say: Beware of swearing; it produces a ready sale for a commodity, but blots out the blessing.