http://nykrindc.blogspot.com/2006/10/islamic-banking-innovation-in-islam.html

the report notes that unlike Hadith (traditions attributed to the Prophet Muhammad) which are immutable, Fiqh, which affects all aspects of life, allows Islamic bankers room for maneuver when designing new financial instruments that are both profit-making and compliant with shari’a…

The MEMRI report notes that the increased demand for Muslim financial institutions in the West has also prompted western firms to being providing these services. The report cites, Lloyds, TDS, Deutsche Bank, the Dow Jones Index, and Citigroup among the most notable examples of western firms adapting to tap these new funds.