Wa maa kaana haazal Quraanu ai yuftaraa min doonil laahi wa laakin tasdeeqal lazee baina yadaihi wa tafseelal Kitaabi laa raiba fee mir Rabbil 'aalameen
And this Qur'an is such that it could not be composed by any unless it be revealed from Allah. It is a confirmation of the revelation made before it and a detailed exposition of the Book. Beyond doubt it is from the Lord of the universe.