Surah Hud Verse 13 - English Translation by Mohammad Shafi
Surah Hudأَمۡ يَقُولُونَ ٱفۡتَرَىٰهُۖ قُلۡ فَأۡتُواْ بِعَشۡرِ سُوَرٖ مِّثۡلِهِۦ مُفۡتَرَيَٰتٖ وَٱدۡعُواْ مَنِ ٱسۡتَطَعۡتُم مِّن دُونِ ٱللَّهِ إِن كُنتُمۡ صَٰدِقِينَ
Or, they say, "He has forged it." Say, "Then bring ten chapters similarly forged and call for aid from whom you can besides Allah, if what you say is the truth