Quran 21:5 from Surah Al-Anbiyaa on Divine Marvels.
بَلۡ قَالُوٓاْ أَضۡغَٰثُ أَحۡلَٰمِۭ بَلِ ٱفۡتَرَىٰهُ بَلۡ هُوَ شَاعِرٞ فَلۡيَأۡتِنَا بِـَٔايَةٖ كَمَآ أُرۡسِلَ ٱلۡأَوَّلُونَ
English translation: Nay they say Muddled dreams nay he (has) invented it nay he (is) a poet So let him bring us a sign like what was sent (to) the former
Transliteration: bal qalu adghathu ahlamin bali if'tarahu bal huwa sha'irun falyatina biayatin kama ur'sila al-awaluna