Quran 13:43 — Surah Ar-Ra'd, ayah 43

وَيَقُولُ ٱلَّذِينَ كَفَرُواْ لَسۡتَ مُرۡسَلٗاۚ قُلۡ كَفَىٰ بِٱللَّهِ شَهِيدَۢا بَيۡنِي وَبَيۡنَكُمۡ وَمَنۡ عِندَهُۥ عِلۡمُ ٱلۡكِتَٰبِ

And those who have disbelieved say, "You are not a messenger." Say, [O Muhammad], "Sufficient is Allah as Witness between me and you, and [the witness of] whoever has knowledge of the Scripture

Oni koji ne vjeruju govore: "Ti nisi poslanik!" Reci: "Meni i vama dovoljan će biti kao svjedok Allah, i onaj koji zna šta je Knjiga."