﴿وَقُرْآنًا فَرَقْنَاهُ لِتَقْرَأَهُ عَلَى النَّاسِ عَلَىٰ مُكْثٍ وَنَزَّلْنَاهُ تَنْزِيلًا﴾
106. And (it is) a Qur’ân which We have divided (into parts), in order that you might recite it to men at intervals. And We have revealed it by stages (in 23 years).