Surat Yūnus - سورة يونس

أَمْ يَقُولُونَ افْتَرَاهُ ۖ قُلْ فَأْتُوا بِسُورَةٍ مِّثْلِهِ وَادْعُوا مَنِ اسْتَطَعْتُم مِّن دُونِ اللَّهِ إِن كُنتُمْ صَادِقِينَ

Muhsin Khan: Or do they say: "He (Muhammad SAW) has forged it?" Say: "Bring then a Surah (chapter) like unto it, and call upon whomsoever you can, besides Allah, if you are truthful!"