Banu Qurayza after his victory over the Meccans in the Battle of Badr, Banu Qaynuqa threatened Muhammad's political position and assaulted a Muslim woman which led to their expulsion from Medina for breaking the peace treaty of Constitution of Medina. The Qurayza remained passive during the whole Qaynuqa affair, apparently because the Qaynuqa were historically allied with the Khazraj, while the Qurayza were the allies of the Aws. Soon afterwards, Muhammad came into conflict with the Banu Nadir. He had one of the Banu Nadir's chiefs, the poet Ka'b ibn al-Ashraf, assassinated and after the Battle of Uhud accused the tribe of
Military career of Muhammad in their favour. Afterwards the two armies exchanged arrow fire, before finally clashing. According to the Quran, thousands of angels descended from heaven and participated in the battle, being instructed by Allah to "smite the [Meccan warrior's] necks and smite of them each finger." According to another Quranic verse, Allah fought and killed the Meccans representatively for the Muslim warriors. The Meccan army eventually collapsed soon after the horse of Abu Jahl was brought down, resulting in the first major Muslim victory. This victory must not so much be ascribed to divine intervention as is done in the Islamic sources,