The Heights - 7:203 "When You do not bring them a sign, they say: "What would have happened if you had asked for a sign". Say: "I follow only what has been revealed to me from my Lord."These are enlightenments from your Lord, a guidance and mercy for a people who believe."
Related:
The Prophets/21:45 "Say: "I warn you only by revelation". But the deaf do not hear the call when they are warned."

The Sandhills/46:9 "Say: "I am not a messenger of any kind, nor do I know what will happen to me or to you. I follow only what has been revealed to me. I am nothing but a clear warner."

The Heights/7:203 "When You do not bring them a sign, they say: "What would have happened if you had asked for a sign". Say: "I follow only what has been revealed to me from my Lord."These are enlightenments from your Lord, a guidance and mercy for a people who believe."

The Cattle/6:106 Follow what has been sent down to you from your Lord. There is no god but Him. And turn away from those who associate partners.

The Heights/7:3 Follow what has been sent down to you from your Lord, and do not follow others besides Him as your friends. How little do you take admonition!
The Heights/7:157 Indeed, they follow (when the time comes) that messenger whom they find written in the Torah and the Gospel with them, the Messenger of Allah, the Messenger of the Ummim (who has not read the Torah and the Gospel), who enjoins upon them good and forbids them from evil, who makes lawful for them good things and forbids for them unclean things, who removes from them the weights and the fetters that weigh them down. Those who believe in him and respect him and help him and follow the light sent down with him are the successful ones.

The Coalition/33:2 Follow what has been revealed to you from your Lord. Allah is aware of all that you do.

The Companies/39:55 Follow the best teaching sent down to you from your Lord, before the torment seizes you suddenly when you do not expect it.
The Companies/39:56 "So that he may not say, "Woe to me for disregarding the teaching of Allah; indeed, I was one of the mockers"
The Companies/39:57 "Or say, "Had Allah guided me to the truth, I would certainly have been one of the righteous."
The Companies/39:58 "Or when he sees the torment, let him not say, "If only I had had a second chance, I would have been of the righteous"

The Ornaments of Gold/43:43 Hold fast to what has been revealed to you, for you are on the right path.

Prophet Jonah/10:15 "When Our clear Verses are recited to them, those who do not hope to meet Us say: "Bring another Qur´an other than this, or change it!"Say: "I cannot change it from my own side. I follow only what has been revealed to me. If I disobey my Lord, I fear the punishment of a great Day."