The Saqīfah (Arabic: السقيفة‎), also known as Saqīfah banī Sāˤidat (Arabic: سقيفة بني ساعدة‎), was a roofed building used by the tribe called the banū Sāˤidat of the faction of the banū Khazraj tribe of the city of Medina in the Hejaz, northwestern Arabia.

The name of the house is used as shorthand for the event, or the gathering, which was a crucial turning point in the history of Islam. On the day Muhammad died (June 8, 632 CE), the Medinan Muslim or "Ansar" gathered in the Saqifah to discuss the future and leadership of the Muslims. There were two Ansar tribes, the Khazraj and the Aws; both were present. However, the Muhajirun, or Muslim emigrants from Mecca, had not been notified of the gathering. When Muhammad's companions, Abu Bakr and Umar, learned of the gathering, they rushed to the meeting. After a tumultuous debate, the details of which are highly contested, those who gathered there gave their allegiance, or bay'ah, to Abu Bakr as the new leader of the Islamic community. There were some Muslims who felt that Ali, Muhammad's cousin and son-in-law, should have been the new leader. They initially refused to take the oath to Abu Bakr and were known as the Shi'at Ali or "partisans for Ali". Some of them even thought that Ali himself didn't take the oath.