The Origins of the Arab Tribes in Medina

The theory, the two of them didn't arrive at the same time. Maybe 10, 15 years apart or a few years apart. That the first tribe arrived and that is the Aus. And the Aus got the alliances and took some protection from the largest of the Yahoodi tribes - Banu Kharela and the Banu Nadir. The civil wars lasted for more than 100 years. They actually were involved in the civil war. Did they actually fight or not? We don't have references. But there was clearly a divide between the Jewish tribes and the two Jewish tribes were helping different sides the Aus and the Khaziraj.