أَم يَقولونَ افتَراهُ ۖ قُل فَأتوا بِسورَةٍ مِثلِهِ وَادعوا مَنِ استَطَعتُم مِن دونِ اللَّهِ إِن كُنتُم صادِقينَ

Or do they say, “He made it up”? Say, “Then produce a chapter like it, and call upon anyone you can, other than God, if you are truthful.”