Surah Al-Anbiya, ayah 5

21:5

بَلۡ قَالُوٓاْ أَضۡغَٰثُ أَحۡلَٰمِۭ بَلِ ٱفۡتَرَىٰهُ بَلۡ هُوَ شَاعِرٞ فَلۡيَأۡتِنَا بِـَٔايَةٖ كَمَآ أُرۡسِلَ ٱلۡأَوَّلُونَ ٥

Bal qālū adghāthu ahlāmi baliftarāhu bal huwa shā'irun falya'tinā bi'āyatin kamā ursilal-awwalūn

But they say, "[The revelation is but] a mixture of false dreams; rather, he has invented it; rather, he is a poet. So let him bring us a sign just as the previous [messengers] were sent [with miracles]."