Qur'an 11:14

فَإِلَّمْ يَسْتَجِيبُوا۟ لَكُمْ فَٱعْلَمُوٓا۟ أَنَّمَآ أُنزِلَ بِعِلْمِ ٱللَّهِ وَأَن لَّآ إِلَـٰهَ إِلَّا هُوَ ۖ فَهَلْ أَنتُم مُّسْلِمُونَ

“And if they do not respond to you - then know that it [i.e., the Qur’ān] was revealed with the knowledge of Allāh and that there is no deity except Him. Then, would you [not] be Muslims?”

Hud 11:14 · Saheeh International