An important book that addresses an important aspect of monotheism, and a great corner of faith is the pillar of faith with its good and evil, sweet and bitter, and it is a corner in which the understandings were lost and the feet were removed and the right of faith was not believed in it except those who followed the path of the predecessors from here emerged the importance of the book and the importance of seeing it . The book of study of destiny for Al -Faryabi is considered an investigator of special importance for researchers interested in behavioral, educational, Islamic, possibly economic and public affairs as a whole.