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In page Umayyad Caliphate:

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The only Umayyad ruler who is unanimously praised by Sunni sources for his devout piety and justice is Umar ibn Abd al-Aziz.[citation needed] In his efforts to spread Islam, he established liberties for the Mawali by abolishing the jizya tax for converts to Islam. Imam Abu Muhammad Abdullah ibn Abdul Hakam stated that Umar ibn Abd al-Aziz also stopped the personal allowance offered to his relatives, stating that he could only give them an allowance if he gave an allowance to everyone else in the empire. After Umar ibn Abd al-Aziz was poisoned in 720, successive governments tried to reverse Umar ibn Abd al-Aziz's tax policies, but rebellion resulted.[citation needed]