Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said concerning this statement of Allah Almighty: "And how can you disbelieve while the verses of Allah are recited to you and His Messenger is among you?" [Al Imran: 101]: The tribe of Aws were talking among themselves when they recalled the affairs of the Jahiliyyah (the Age of Ignorance), and they became angry until war was about to break out between them; they took up their weapons and advanced on one another. Then this verse was revealed: "And how can you disbelieve, while the verses of Allah are recited to you" [Al Imran: 101] up to: "and He saved you from it" [Al Imran: 103].
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12613