The presence of the Prophet and Qur'an as undeniable signs

وَكَيْفَ تَكْفُرُونَ وَأَنتُمْ تُتْلَىٰ عَلَيْكُمْ ءَايَـٰتُ ٱللَّهِ وَفِيكُمْ رَسُولُهُۥ ۗ وَمَن يَعْتَصِم بِٱللَّهِ فَقَدْ هُدِىَ إِلَىٰ صِرَٰطٍ مُّسْتَقِيمٍ

And how could you disbelieve while to you are being recited the verses of Allāh and among you is His Messenger? And whoever holds firmly to Allāh has [indeed] been guided to a straight path.