هود — Hud Ayat 13
اَمْ يَقُوْلُوْنَ افْتَرٰىهُ ۗقُلْ فَأْتُوْا بِعَشْرِ سُوَرٍ مِّثْلِهٖ مُفْتَرَيٰتٍ وَّادْعُوْا مَنِ اسْتَطَعْتُمْ مِّنْ دُوْنِ اللّٰهِ اِنْ كُنْتُمْ صٰدِقِيْنَ
Am yaqūlūnaftarāh(u), qul fa'tū bi‘asyri suwarim miṡlihī muftarayātiw wad‘ū manistaṭa‘tum min dūnillāhi in kuntum ṣādiqīn(a).
"Or do they say, "He invented it"? Say, "Then bring ten surahs like it that have been invented and call upon [for assistance] whomever you can besides Allah, if you should be truthful.""