Concise Quran Commentary
And I have not sent before you, O Messenger, any messenger except that I revealed to him that there is no true god except Me, so worship Me alone and do not associate any partner with Me.
وَمَآ أَرْسَلْنَا مِن قَبْلِكَ مِن رَّسُولٍ إِلَّا نُوحِىٓ إِلَيْهِ أَنَّهُۥ لَآ إِلَـٰهَ إِلَّآ أَنَا۠ فَٱعْبُدُونِ
“We never sent before you [O Prophet] any messenger without revealing to him that none has the right to be worshiped except Me, so worship Me.”