And thus We have sent to you (O Muhammad SAW) Ruhan (an Inspiration, and a Mercy) of Our Command. You knew not what is the Book, nor what is Faith? But We have made it (this Quran) a light wherewith We guide whosoever of Our slaves We will. And verily, you (O Muhammad SAW) are indeed guiding (mankind) to the Straight Path (i.e. Allah's religion of Islamic Monotheism).