How It All Began

Nearly four thousand years ago, in the Sumerian town of Ur in the valley of the river Euphrates, lived a young man named Abraham. The people of Ur had once worshipped Allah but as time passed they forgot the true religion and started praying to idols, statues made of wood or clay and sometimes even of precious stones. Even as a small child Abraham could not understand how his people, and especially his father, could make these images with their own hands, call them gods, and then worship them. He had always refused to join his people when they paid respect to these statues. He would leave town to sit alone and think about heavens and the worlds around him.. He was sure his people were doing wrong and so alone he searched for the right way. One clear night as he sat staring at the sky he saw a beautiful shining star, so beautiful that he cried out: 'This must be Allah!' He looked at it in awe for some time, until suddenly it began to fade and then it disappeared. He turned away in disappointment saying: I love not things that set. (Koran vi.77)

see this link

[link]