Hud, 13 Ayah
11:13
أَمۡ يَقُولُونَ ٱفۡتَرَىٰهُۖ قُلۡ فَأۡتُواْ بِعَشۡرِ سُوَرٖ مِّثۡلِهِۦ مُفۡتَرَيَٰتٖ وَٱدۡعُواْ مَنِ ٱسۡتَطَعۡتُم مِّن دُونِ ٱللَّهِ إِن كُنتُمۡ صَٰدِقِينَ ١٣
'Am Yaqūlūna Aftarāhu ۖ Qul Fa'tū Bi`ashri Suwarin Mithlihi Muftarayātin Wa Ad`ū Mani Astaţa`tum Min Dūni Al-Lahi 'In Kuntum Şādiqīna
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."