Banu Khazraj
Saqifah Bani Sa'idah (, '), commonly known as simply Saqifah, ( '), was a roofed building in Medina used by the Banu Sa'idah clan of the Banu Khazraj tribe. Saqifah is significant as the site where, after Muhammad's death, some of his companions gathered and pledged allegiance to Abu Bakr, electing him as the first Caliph.