At-Tur 52:32

فَذَكِّرْ فَمَا أَنتَ بِنِعْمَتِ رَبِّكَ بِكَاهِنٍ وَلَا مَجْنُونٍ

So remind [O Muhammad], for you are not, by the favor of your Lord, a soothsayer or a madman.

أَمْ يَقُولُونَ شَاعِرٌ نَّتَرَبَّصُ بِهِ رَيْبَ الْمَنُونِ

Or do they say [of you], "A poet for whom we await a misfortune of time?"

قُلْ تَرَبَّصُوا فَإِنِّي مَعَكُم مِّنَ الْمُتَرَبِّصِينَ

Say, "Wait, for indeed I am, with you, among the waiters."

أَمْ يَقُولُونَ تَقَوَّلَهُ ۚ بَل لَّا يُؤْمِنُونَ

Or do they say, "He has made it up"? Rather, they do not believe.

فَلْيَأْتُوا بِحَدِيثٍ مِّثْلِهِ إِن كَانُوا صَادِقِينَ

Then let them produce a statement like it, if they should be truthful.

أَمْ خُلِقُوا مِنْ غَيْرِ شَيْءٍ أَمْ هُمُ الْخَالِقُونَ

Or were they created by nothing, or were they the creators [of themselves]?