[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]  

[Machine] The Qur'an was revealed in its entirety to the lowest heaven on the Night of Decree, and then it was revealed over a period of twenty years. Allah says, "And they do not bring you [O Muhammad] the similitude, but We bring you the truth and a better explanation." [Surah Al-Furqan, verse 33]. And He also says, "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." [Surah Al-Isra, verse 106]  

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