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 Allāh1 has [indeed] been guided to a straight path.
Translation: Saheeh International (English)
1 i.e., adhering to His ordinances strictly, then trusting in Him and relying upon Him completely.
How could you disbelieve in Allah after you have had faith in Him, especially when you have the biggest reason for having firm faith with you? The verses of Allah are being recited to you, and the Messenger Muhammad (peace be upon him) is making them clear to you. Whoever holds on firmly to the Book of Allah and His Messenger’s way of life, Allah has guided them to the right path.