Al-Mu'ayyad was born in Shiraz not later than 387/997 and died in Cairo in 470 AH/1078 AD.
He lived during the time of the Fatimid Caliphs Al-Hakim (386–412 AH / 996–1021 AD), Al-Zahir (412–427 AH / 1021–1036 AD) and Al-Mustansir (427–48AH / 1036–1094AD).