Assertion: caliph's rule | /r/HasProperty | contested by abd allan ibn al-zubayr
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text: The rule of Mu'awiya's son Yazid and grandson Mu'awiya II was contested by Abd Allan ibn al-Zubayr who claimed to be the Caliph and the succession was not settled until the victory of a different Umayid branch headed by Abd al-Malik ibn Marwan in the year 74.