Mr.Ismail Sayyed, it is not a proven fact that The Prophet (Mohammed) was illeterate. Some people are saying so but the same also can be a propaganda to mislead them. Have you read The Gitanjali by Rabindranath Tagore? You can get a free copy from www.gutenberg.org Pl read the same and understand the beauty of the images he creates! The said challenge is there in The Koran itself. That was also a way of befooling people by The Prophet (Mohammed).