"It is He Who sends down manifest Ayaat (proofs, evidences, verses, lessons, signs, revelations, etc.) to His slave (Muhammad) that He may bring you out from darkness into light. And indeed, Allah is to you Kind and Merciful."
[Al-Hadeed 57:9]

"Ta-Seen [These letters are one of the miracles of the Quran, and none but Allah (Alone) knows their meanings]. These are the Verses of the Quran, and (it is) a Book (that makes things) clear"
[Al-Naml 27:1]

" That (this) is indeed an honourable recital (the Noble Quran). "
[Al-Waaqiaah 56:77]

Alif Laam Raa. A book which we have revealed to you (Muhammad) so that you may lead the people from out of the darknesses into the light by their Lord's leave, to the path of the Almighty, the Praiseworthy.
[Ibrahim 14:1]

"Verily, We have sent down to you (O Muhammad) the Book (this Quran) for mankind in truth. So whosoever accepts the guidance, it is only for his ownself; and whosoever goes astray, he goes astray only for his (own) loss. And you (O Muhammad) are not a Wakeel (trustee or disposer of affairs, or guardian) over them"
[Al-Zumar 39:4]