Hazrat Mu‘az (ra) belonged to the Banu Malik bin Najjar clan of the Khazraj tribe of the Ansar. His father’s name was Harith bin Rifa‘ah and his mother’s name was Afraa bint Ubaid. Hazrat Mu‘awwiz (ra) and Hazrat Auf (ra) were his brothers. All three of these brothers used to be referred to by the name of their father as well as their mother. Hence, they were also known as Banu Afraa [the sons of Afraa].