Experts in Islamic finance believe their way of doing business has shielded them from the global credit crisis.
But how does it differ from conventional Western finance?
A former executive director of the International Monetary Fund, Dr Abbas Mirakhor, says wider Islamic economics relies on God’s guidance, handed down almost 1,400 years ago.
There is a "consciousness of a supreme creator and a system that he has provided", he says.
What we know as the conventional Western way does not have that, which is "really the major difference between the two", he adds.