From Aawsat.com: Islamic finance is a moral financial model based on divine principles, the most important of which is justice.
There are many Quranic verses and Hadiths that deal with this, such as: “We sent aforetime our messengers with Clear Signs and sent down with them the Book and the Balance (of Right and Wrong), that men may stand forth in justice,” [Surat al Hadid; Verse 25]……………………………….Full Article: Source