Demise

In his book, Usdul Ghabah, Allamah Ibn Athir has recorded several narrations with regard to the demise of Hazrat Mu‘az (ra). According to one of these narrations, Hazrat Mu‘az (ra) was wounded in the Battle of Badr and passed away from his injuries after returning to Medina. In another narration, he lived up until the Khilafat of Hazrat Uthman (ra). According to yet another narration, he lived until the Khilafat of Hazrat Ali (ra) and he passed away during the Battle of Siffin, which took place between Hazrat Ali (ra) and Amir Muawiyyah (ra) in the year 36 AH/37 AH. Hazrat Mu‘az (ra) fought alongside Hazrat Ali (ra).

(Usdul Ghabah, Vol. 5, p. 191, Mu‘az bin al-Harith bin Rifa‘ah (ra), Dar-ul-Kutub al-Ilmiyyah, Beirut, 2003) (Al-Isti‘ab, Vol. 3, pp. 1409-1410, Mu‘az bin Afraa, Dar-ul-Jeel, Beirut)

In any case, there are different accounts with regard to his demise. If one analyses the accounts relating to his marriage and his children, it seems that he lived a long life, that is if these narrations are indeed regarding him.