Islam has forbidden earning from interests and banks have designed their products to get money from the second largest Muslim population in the world as Indonesia has the highest Muslim population.
Dow Jones has Islamic index, FTSE of Britain has not only Islamic Index but also a full fledged Islamic bank.
"Out of 6,000 BSE listed companies, approximately4,200 are Shariah compliant. The market capitalization of these stocks accounts for approximately 61% of the total market capitalization of companies listed on BSE.
Thus if you are an entrepreneur than be ready to cash this big market as world is doing.
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