Sharia-compliant banking takes on conventional banks
18 July 2014 Last updated at 12:29 BST
Islamic banking is growing quickly, and firms are developing Sharia-compliant products designed to challenge conventional banking.
Islamic banks want to open up markets for investors who insist on banking that conforms with Islamic law, but they also want to appeal to other investors.
Multinational banks appear equally keen to expand their offerings to access a growing market.
The BBC's Middle East correspondent Mark Lobel reports from Dubai.