Ansar ( , "The Helpers") is an Islamic term that literally means "helpers" and denotes the Medinan citizens that helped the Islamic prophet, Muhammad and the Muhajirun on the arrival to the city after the migration to Medina and fought in the cause of Islam. They belonged to two main tribes of Azd, the Banu Khazraj and the Banu Aus. Azd is the same tribe that Ghamd tribe and Zahran tribe belong to.