It is more likely that this book is a Moroccan book in literature that belongs to the Moroccan Fatimid era, and it is unique in mentioning some human aspects that indicate a deep experience of life among a group of the first scholars of the nation such as Al -Fahrahidi and Ibn Al -Urabi, Ibn Al -Anbari and Abi Amr bin Al -Ala. However, the most important thing that this book offers is the image of the Fatimid caliphs in Morocco. The book calls for a reconsideration of the beliefs of the Fatimids, and in their position on the Abbasid caliphate this book, which the Arab Library called for its name in the books of merits and opposites written by a wilderness in one hundred and fifty seven chapters. In his work, the investigator has relied on three copies, which are not in any of them, which the investigator can prepare for a mother, which is a version of Leden, and its copy is Muhammad bin Muhammad Al -Jazari, the famous son of Hami, and this version included all the doors of the book.