This book comes as a translation of the author's works, its definition and the way it works in the sciences of religion. The book begins with an introduction known as the manuscript, and pictures of it followed by a reading of the astronomy charged in the conditions of Muhammad ibn Tulun and includes six successive chapters: Chapter One: Facility .. Working with Science, Chapter Two jobs and positions, Chapter Three is the list of books written by Bin Tulun and which I collect in this book Chapter Four: It includes the supplement of the list of books, which is what the author did not provide, but rather came from the work of the book investigator, then the fifth chapter came in the praise of the scholars and praise of it.