Quran 15:6 from Surah Al-Hijr on Divine Marvels.
وَقَالُواْ يَٰٓأَيُّهَا ٱلَّذِي نُزِّلَ عَلَيۡهِ ٱلذِّكۡرُ إِنَّكَ لَمَجۡنُونٞ
English translation: And they say O you (to) whom has been sent down [on him] the Reminder indeed you (are) surely mad
Transliteration: waqalu yaayyuha alladhi nuzzila alayhi al-dhik'ru innaka lamajnunun