And when you, [O Muḥammad], do not bring them a sign [i.e., miracle], they say, "Why have you not contrived it?" Say, "I only follow what is revealed to me from my Lord. This [Qur’ān] is enlightenment from your Lord and guidance and mercy for a people who believe."
And If you O Messenger come with a sign, they reject it and turn away from it; and if you do not come to them with a sign, they ask why he did not produce one. Say to them O Messenger: 'It is not up to me to just come with a sign. Rather, I only follow what was revealed to me from Allah: the Qur’ān which I recite to you, an evidence and proof from Allah your Creator, the arranger of your lives, a guidance and mercy for the believers among His creation. As for those who do not have faith, then they are lost and wretched.'