11:13
أَمْ يَقُولُونَ ٱفْتَرَىٰهُ ۖ قُلْ فَأْتُوا۟ بِعَشْرِ سُوَرٍ مِّثْلِهِۦ مُفْتَرَيَـٰتٍ وَٱدْعُوا۟ مَنِ ٱسْتَطَعْتُم مِّن دُونِ ٱللَّهِ إِن كُنتُمْ صَـٰدِقِينَ
am yaqūlūna if'tarāhu qul fatū biʿashri suwarin mith'lihi muf'tarayātin wa-id'ʿū mani is'taṭaʿtum min dūni l-lahi in kuntum ṣādiqīna
If they say, ‘He has invented it himself,’ say, ‘Then produce ten invented suras like it, and call in whoever you can beside God, if you are truthful.’
Or they say, "He (Prophet Muhammad صلى الله عليه و سلم) forged it (the Qur’an)." Say: "Bring you then ten forged Sûrahs (chapters) like unto it, and call whomsoever you can, other than Allâh (to your help), if you speak the truth!"