According the most noble knowledge a man can learn and teach to others is the bases of belief (emaan) and its requirements. The Best precautionary measures he can protect himself with is the knowledge of the characteristics of disbelief (Kufr), its causes and exigencies. If man has insight into these two important things, he will know the way of his happiness and follow it, and avoid the way of his misery.
In this book, we hope to elucidate the pillars of emaan and the characteristics of kufr and its causes. Allah is the one who guides us to truth. If we do right, it is only from Allah, the truth. If we err, its only from ourselves and from satan. We ask Allah to forgive us