The Saqīfah (Arabic: السقيفة), also known as Saqīfah Banī Sā'idah (Arabic: سقيفة بني ساعدة), was a roofed building used by a Jewish tribe called Banu Sa'idah, a faction of Banu Khazraj tribe of the city of Madinah in Hejaz, western 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. Muhammad Ibn Jarir Tabari writes in his Ta'rikh at page 456, Volume II that ‘Umar came to the door of the Prophet's house but did not enter. He sent a word to Abu Bakr: "Come immediately; I have urgent business with you." Abu Bakr sent message to him that he had no time. ‘Umar sent another message: "We have came across a critical issue. Your presence is required."
Abu Bakr came out and was informed secretly about the gathering of the Ansars in the Saqifah by Umar. ‘Umar said that they should go there at once and both of them moved. 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, as Ali was appointed for the leadership role by Muhammad at Ghadir Khumm a week after the prophet's return from the Farewell Pilgrimage. They initially refused to take the oath to Abu Bakr and were known as the Shi'ah Ali or "Follower of Ali." They did so because Ali himself didn't take the oath as described by Shia sources. On the other hand Sunni sources like, Sahih Bukhari, Seerat Ibn Ishaq, Seerat Ibn Hatham, Tareekh Ibn Kathir, Tareekh e Al-Tabari, Tareekh Ibn Khaldun and almost all other sources heavily disagree with Shia Historians on the matter of pledges of allegiance of Ali with first Caliph Abu Bakr and then with Umar and Uthman.