Surah Al-Isra — Ayah 88 (17:88)
قُل لَّئِنِ ٱجۡتَمَعَتِ ٱلۡإِنسُ وَٱلۡجِنُّ عَلَىٰٓ أَن يَأۡتُواْ بِمِثۡلِ هَٰذَا ٱلۡقُرۡءَانِ لَا يَأۡتُونَ بِمِثۡلِهِۦ وَلَوۡ كَانَ بَعۡضُهُمۡ لِبَعۡضٖ ظَهِيرٗا ٨٨
English translation (Saheeh International)
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."
Brief commentary
Say, O Messenger: If all of humankind and jinns united to bring the like of this Qur’ān which was revealed to you, in its eloquence, excellent sequence and pure style, they will never be able to bring anything like it, even if they were to all assist and help one another.