Islamic banking is just like regular banking only with no interest what so ever. The interest in Islam is called "Riba" (Usury). Riba or Usury is strictly forbidden in Islam because it is unfair.
He had someone write the Holy Qur'an. He was a prophet, like others before him. The Qur'an was written word for word in the Qur'an as they were given to him by the angel Christians call Gabriel (told...