Sharia forbids "riba" which is usury. The fundamental concept is the unjust interest charge on business transactions. Not all Islamic scholars agree on what "riba" happens to be and how/when punishment for such is meted out. There are banks in Islam and they charge interest.
Right, they just don’t call it interest.
Interest has two types.
Destruction of money through inflation and actual usury on an asset.
Mad Muhammed, Mr. All Knowing was ignorant about economics. Oops!
So Koran mistakes cannot be amended.