The new caliph wrote to Kaydar, ordering him to drop the names of the provincial Arabs from the army registers (diwan) and stop paying their salaries. This act met stiff resistance, however, and soon a certain Yahya ibn al-Wazir al-Jarawi revolted and drew five hundred men to his cause. Kaydar responded by preparing to engage the rebels, but he died in 834, and the governorship was taken over by his son Muzaffar.[5]