Some info which was new to me
Shariah strictly prohibits any form of speculation or gambling, which is referred to as maisir. Shariah also prohibits taking interest on loans. ... To earn money without the typical practice of charging interest, Islamic banks use equity participation systems.
The main principles of Islamic finance are that: Wealth must be generated from legitimate trade and asset-based investment. (The use of money for the purposes of making money is expressly forbidden.) Investment should also have a social and an ethical benefit to wider society beyond pure return
Islamic banking is the provision of financial services based on the ethical principles of Shari'ah. ... In essence, Islamic principles prohibit collection and utilisation of interest for business purposes. Permissible transactions include Islamic loans called qard hasan, otherwise known as benevolent loans.
The Islamic banking system is when the conventional bank system applies a profit system in interest. The Islamic banking system still aims to profit but not the interest system as used by conventional banks