Death of Muhammad Taqi (ninth Shia leader), Dhu al-Qadah 30. Muhammad Taqi, recognized the ninth leader in Twelver Shia tradition, died at the age of 25 on this date. His burial place is in Kadhimayn, and the anniversary of his death is observed among Shia communities. Memorial gatherings are held in some Shia regions on this date, and the event is noted in the Twelver Shia religious calendar. The observance holds particular significance for adherents of this branch of Shia Islam.