498 • GlossaryZoroastrianism: Pre-Islamic Persian religion popularized in the sixth century
B.C.E. by Zoroaster, preaching the existence of a supreme deity and of a cosmic
struggle between Good and Evil
Zubayr (zoo-BAYR): Muhammad's associate who challenged Ali in the 656 Battle
of the Camel, in which Zubayr died; father of Abdallah ibn al-Zubayr