﴿أَمْ يَقُولُونَ افْتَرَاهُ ۖ قُلْ فَأْتُوا بِسُورَةٍ مِثْلِهِ وَادْعُوا مَنِ اسْتَطَعْتُمْ مِنْ دُونِ اللَّهِ إِنْ كُنْتُمْ صَادِقِينَ﴾
38. Or do they say: "He (Muhammad ﷺ) has forged it?" Say: "Bring then a Sûrah (chapter) like unto it, and call upon whomsoever you can besides Allâh, if you are truthful!"