What is the Hādawiyyah madhhab, and are they followers of Imam al-Hādī, who is known among the Twelver Shia?
The Hadawiyyah are a sub-sect of the Zaydiyyah, named after Al-Hadi ila'l-Haqq Yahya ibn al-Husayn ibn al-Qasim (245–298 AH), who assumed the imamate in Yemen and fought the Qaramita.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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