Surah Hud Verse 13 - English Translation by Muhammad Sarwar
Surah Hudأَمۡ يَقُولُونَ ٱفۡتَرَىٰهُۖ قُلۡ فَأۡتُواْ بِعَشۡرِ سُوَرٖ مِّثۡلِهِۦ مُفۡتَرَيَٰتٖ وَٱدۡعُواْ مَنِ ٱسۡتَطَعۡتُم مِّن دُونِ ٱللَّهِ إِن كُنتُمۡ صَٰدِقِينَ
Do they, (the unbelievers), say that (Muhammad) has falsely ascribed (the Quran) to God? Ask them, "Compose ten chapters like (those of the Quran) and call on whomever you can for help besides God if you are true in your claim