وَقُرآنًا فَرَقناهُ لِتَقرَأَهُ عَلَى النّاسِ عَلىٰ مُكثٍ وَنَزَّلناهُ تَنزيلًا

And [it is] a Qur'an which We have separated [by intervals] that you might recite it to the people over a prolonged period. And We have sent it down progressively.