الاعراف — Al-A'raf Ayat 184
اَوَلَمْ يَتَفَكَّرُوْا مَا بِصَاحِبِهِمْ مِّنْ جِنَّةٍۗ اِنْ هُوَ اِلَّا نَذِيْرٌ مُّبِيْنٌ
Awalam yatafakkarū mā biṣāḥibihim min jinnah(tin), in huwa illā nażīrum mubīn(un).
"Then do they not give thought? There is in their companion [Muhammad] no madness. He is not but a clear warner."