Al-Mukhtasar
وَيَقُولُ ٱلَّذِينَ كَفَرُوا۟ لَسْتَ مُرْسَلًا ۚ قُلْ كَفَىٰ بِٱللَّهِ شَهِيدًۢا بَيْنِى وَبَيْنَكُمْ وَمَنْ عِندَهُۥ عِلْمُ ٱلْكِتَـٰبِ ﴿٤٣﴾
Those who disbelieved in Allah say: You, O Muhammad, have not been sent by Allah. Tell them, O Messenger, Allah is sufficient as a witness between me and you to the fact that I have been sent from my Lord to you, as well as those who have knowledge of the heavenly scriptures that contain my description. The one for whom Allah is a witness to His truthfulness, is not harmed by the rejection of those who deny him.