وَقُرْآنًا فَرَقْنَاهُ لِتَقْرَأَهُ عَلَى النَّاسِ عَلَى مُكْثٍ وَنَزَّلْنَاهُ تَنزِيلًا

We have sent the Quran in [discrete] parts so that you may recite it for the people a little at a time, and We have sent it down piecemeal.