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...appointed his son as heir apparent in 1154, thus making his family, which did not belong to the Maṣmūdah tribe, the ruling dynasty. Through this act ʿAbd al-Muʾmin bypassed Abū Ḥafṣ ʿUmar, the Maṣmūdah chief who gave protection to Ibn Tūmart in the High Atlas during his period of exile and whom the other...
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