When the tribe of Bani Quraidhah violated their covenant...

When the tribe of Bani Quraidhah violated their covenant with the Noble Prophet (S), the Noble Prophet (S) initiated a military expedition against them and besieged their fort.

Some persons from the tribe of Aus approached him and requested: “Just as you had handed over the fate of the tribe of Bani Qainaqa’a to be decided by the tribe of Khazraj, leave it upon us to decide the fate of the tribe of Bani Quraidhah.” “Will you be satisfied if I were to appoint one person from your tribe to rule in the matter?” the Noble Prophet (S) asked. They agreed. The Noble Prophet (S) suggested Sa’d Ibn Mu’adh, but the Bani Quraidhah refused to accept him.