Al-Mutahhar took up a stance in the strong mountain stronghold Thula.
After al-Mutawakkil's death in Hajjah in 1298, al-Mahdi Muhammad claimed the succession, although the imamate was not strictly speaking hereditary.
Al-Mu'ayyad Muhammad ruled San'a and the surrounding districts; the Kawkaban area stood under the sons of the old imam al-Mutawakkil al-Mutahhar; and the traditional Zaidi centre Sa'dah and its districts were divided between al-Mansur Muhammad and two other families.
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Muhammad bin Ali as-Siraji al-Washali was one of the three Sayyids who claimed the Yemeni imamate after the death of al-Mutawakkil al-Mutahhar in Dhamar in 1474.
The sons of the old imam al-Mutawakkil al-Mutahhar dominated Kawkaban, and the region around the traditional Zaidi centre Sa'dah was divided between imam al-Mansur Muhammad and two other factions.
After some skirmishing, the Tahiride Sultan Ali temporarily took Dhamar in 1460.
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His grandson Yahya bin al-Mukhtar bin al-Mutahhar was emir of Ta'izz under the Tahiride Sultan Amir.