[Machine] The Quran was revealed in its entirety to the lower heaven on the Night of Decree, and then revealed after that over the course of twenty years. "And they bring you not an example but We bring you the truth and the best interpretation of it." [Al-Furqan 33] "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." [Al-Isra' 106]  

أُنْزِلَ الْقُرْآنُ جُمْلَةً وَاحِدَةً إِلَى السَّمَاءِ الدُّنْيَا فِي لَيْلَةِ الْقَدْرِ ثُمَّ أُنْزِلَ بَعْدَ ذَلِكَ بِعِشْرِينَ سَنَةً {وَلَا يَأْتُونَكَ بِمَثَلٍ إِلَّا جِئْنَاكَ بِالْحَقِّ وَأَحْسَنَ تَفْسِيرًا} [الفرقان 33] {وَقُرْآنًا فَرَقْنَاهُ لِتَقْرَأَهُ عَلَى النَّاسِ عَلَى مُكْثٍ وَنَزَّلْنَاهُ تَنْزِيلًا} [الإسراء 106]  

[Machine] The Quran was revealed in its entirety to the lower heaven, then it was revealed gradually over a period of twenty years. Allah, the Mighty and Majestic, says: {And they do not come to you with an argument except that We come to you with the truth and the best explanation} [Al-Furqan 33]. He also says: {And [mention] the Qur'an, for We have made it distinct, that you may recite it to the people in intervals. And We have sent it down progressively} [Al-Isra 106].  

نَزَلَ الْقُرْآنُ جُمْلَةً إِلَى السَّمَاءِ الدُّنْيَا ثُمَّ نَزَلَ بَعْدَ ذَلِكَ فِي عِشْرِينَ سَنَةً وَقَالَ ﷻ {وَلَا يَأْتُونَكَ بِمَثَلٍ إِلَّا جِئْنَاكَ بِالْحَقِّ وَأَحْسَنَ تَفْسِيرًا} [الفرقان 33] قَالَ {وَقُرْآنًا فَرَقْنَاهُ لِتَقْرَأَهُ عَلَى النَّاسِ عَلَى مُكْثٍ وَنَزِّلْنَاهُ تَنْزِيلًا} [الإسراء 106]