From Aawsat.com: At first, the motive for establishing Islamic banking was purely Shariaa related, as some businessmen and intellectuals felt they had a duty in terms of Shariaa towards their religion and nation to provide a banking alternative that bases its rules and work regulations on Islamic Shariaa.
The aim was to ensure religiously lawful means for Muslim society to benefit from the banking system away from religious embarrassment……………………….Full Article: Source