Assertion: caliph's position | /r/CapableOf | pertain to the legitimacy of those
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text: The position of the caliph is the most central of all political institutions in the history of classical Islam, and issues pertaining to the legitimacy of those occupying this office, the scope of its powers, and the theoretical and practical accommodations forced upon it during the course of its long career are central to the political and religious history of Islam.