قُل لَّئِنِ ٱجْتَمَعَتِ ٱلْإِنسُ وَٱلْجِنُّ عَلَىٰٓ أَن يَأْتُوا بِمِثْلِ هَـٰذَا ٱلْقُرْءَانِ لَا يَأْتُونَ بِمِثْلِهِۦ وَلَوْ كَانَ بَعْضُهُمْ لِبَعْضٍ ظَهِيرًا

Qul la-ini ijtamaAAati al-insu waljinnuAAala an ya/too bimithli hatha alqur-ani laya/toona bimithlihi walaw kana baAAduhum libaAAdinthaheera

Say, "If mankind and the jinn gathered in order to produce the like of this Qur’ān, they could not produce the like of it, even if they were to each other assistants."