When the power of the allied Confederates collapsed .
Confederates began to slacken and resign to the current unfavourable balance of power , Muhammad seized this rare opportunity and decided that it was time to take justice on Banu Lahyan .
When the power of the allied Confederates collapsed and they began to slacken and resign to the current unfavourable balance of power , Muhammad seized this rare opportunity and decided that it was time to take justice on Banu Lahyan .