Abu Musa al-Ash’aree said that the Prophet sal Allahu alayhi wa sallam said:
The Quran is either an evidence for you, or against you. [Muslim]
An orientalist said of the Quran:
Indeed, it has sweetness and it is coated with sweetness. The top of it is fruitful and the bottom of it is fruitful. There is nothing that can be higher than it.