The Jews acted as an advisor to both Al Aws and Al Khazraj. They lent them money on high interest. It was a high profit trade for the Jews to keep the two tribes in war.
The Jews also used to tell the Arab tribes that a new prophet would appear soon. The Jews always told them that when the new prophet appeared, they would follow him and they would gain victory over the world.
Given the situation, many people were dissatisfied with the way things were going in Yathrib. Many did not like it but had no means to stop it or change it. Many wanted to put an end to the sad situation in Yathrib but their power and number were too little to counter the skilled tactics of the Jews. They truly hoped that a prophet should appear and they themselves follow him.
