Death of Ali ibn Muhammad (tenth Shia leader), Rajab 3. Ali ibn Muhammad, recognized the tenth leader of Twelver Shia Muslims, died on this date. He lived during the third century Hijri and played a significant role in guiding his followers under the Abbasid rule. This day is observed among Shia communities a time to remember the life and activities of Ali ibn Muhammad. Commemorative events are held in some communities, and the historical and religious significance of this date continues to be acknowledged.