Surah Hud Verse 13

أَمْ يَقُولُونَ افْتَرَاهُ ۖ قُلْ فَأْتُوا بِعَشْرِ سُوَرٍ مِّثْلِهِ مُفْتَرَيَاتٍ وَادْعُوا مَنِ اسْتَطَعْتُم مِّن دُونِ اللَّهِ إِن كُنتُمْ صَادِقِينَ

Am yaqooloonaf taraahu qul faatoo bi'ashri Suwarim mislihee muftarayaatinw wad'oo manis tata'tum min doonil laahi in kuntum saadiqeen

Translation / The Meaning

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."