Deviation from the correct belief comes as a result of the dominance of desires over hearts and fanaticism towards the doctrine of heretics. Some imams said: "There are people whose beliefs will save them despite their lack of work, and there may be peoples whose beliefs will destroy them despite their abundance of work," and the love of prestige, money, and the world, and they are the corruption of religion. Some of them said: "I have never done a job and people learned about it, but I dropped it." In this book, Imam Abu Hamid bin Muhammad al-Ghazali - may God have mercy on him - explains in several sections: the pillars of religion and an explanation of the meaning of etiquette, the meaning of behavior and Sufism, the meaning of reaching and connection, the meaning of monotheism and knowledge, an explanation of the soul, spirit, heart and mind, an explanation of the meaning of love, the meaning of being intimate with God Almighty. An explanation of the honor of knowledge and the necessity of seeking it, an explanation of the meaning of the Most Beautiful Names, belief and adherence to a correct belief, an explanation of the attributes of God Almighty... and other chapters that, knowing them, refine the believer's behavior and guide him to the path of goodness and guidance.