This is a book, The Clear Light (AL-NŪR AL-MUBĪN) by Ibn Juzayy Al-Kalbī, in which he has mentioned religious beliefs that must be held by all Muslims, and for which he has established definitive logical evidences, which he derived from the traditional transmitted sciences, and which he acquired from the chosen radiances. In these he adopted what is found in the Book and the Sunna, and he paid tribute to the way of the pious predecessors of this community.