Edited sentence: "  The majority of academic scholars think that Banu Qurayza had negotiated with the enemy or that Muslims "discovered, or perhaps became suspected" that the Jews were conspiring with the enemy.John Esposito, professor of Islamic studies at Georgetown University writes that Muhammad's use of warfare in general was alien neither to Arab custom nor to that of the Hebrew prophets, as both believed that God had sanctioned battle with the enemies of the Lord.On the fate of Banu Qurayza, another academic point of view is that Ibn Ishaq, the first biographer of Muhammad, supposedly gathered many details of the incident from descendents of the Qurayza Jews themselves.These Jews allegedly embellished or manufactured details of the incident by borrowing from histories of Jewish persecutions during Roman times.Watt, a scholar of Islamic studies, however thinks that this argument "is not entirely convincing