This imam had a great student in self-knowledge and the knowledge of power, and he used to be kind to his companions in admonishing him and concealed that from most of his companions out of fear for him from them. That is why he was called the Healer of the Wretched, as Yaqub Yusuf, peace be upon them both, kept secret, out of concern for him from his brothers. He used to occupy most of his companions with the knowledge of management and the like. What is problematic with this art is the installation of souls in bodies, analyzing bodies, and composing them by removing an image from them or removing an image from them, so that they can understand from this the work of God, the All-Knowing, the Wise, and from this pole came the knowledge of the world and that it is a great human being, and that the human being is brief in crime and identical in meaning, so tell me the spirit from which I took what I entrusted him with this book that one day he gathered his companions in Daskra and h