Quran 13, Ar-Ra'd (Thunder) ⓘ
13:43They who disbelieve say: Thou art no messenger (of Allah). Say: Allah, and whosoever hath knowledge of the Scripture, is sufficient witness between me and you.
وَيَقُولُ الَّذِينَ كَفَرُوا لَسْتَ مُرْسَلًا قُلْ كَفَى بِاللَّهِ شَهِيدًا بَيْنِي وَبَيْنَكُمْ وَمَنْ عِنْدَهُ عِلْمُ الْكِتَابِ