Al-Isra 17:88

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."

Say, “If all the humans and jinns join together to produce anything like this Qur’ān, they will not (be able to) come up with anything like it, even if they assist one another.