1. The holy book of Muslims. Al-Quran.
2. The Islamic Jurisprudence. It is derived from the earlier rulings and precepts based on Quran and Sunnah. This is defined for issues which has not been dealt directly in Quran or in Sunnah.
3. The sayings and practices of Prophet Muhammad, as have been revealed by his life and deeds.
4. Ainley, M., Mashayekhi, A., Hicks, R., Rahman, A. and Ravalia, A. (2007) Islamic Finance in the UK: Regulation and Challenges. UK: Financial Services Authority.
5. Thesis submitted to the Department of Finance of the University of Maastricht in partial fulfillment of the requirements for the degree of Master of International Business-Finance;F Abderrezak,2008