he who turns back On his heels, not the least Harm will he do to Allah And Allah will give reward to those Who are grateful." () Saqifa In the immediate aftermath of the death of Muhammad, a gathering of the Ansar (natives of Medina) took place in the Saqifah (courtyard) of the Banu Sa'ida clan. The general belief at the time was that the purpose of the meeting was for the Ansar to decide on a new leader of the Muslim community among themselves, with the intentional exclusion of the Muhajirun (migrants from Mecca), though this has later become the subject of debate. Nevertheless, Abu Bakr and Umar, upon learning of the meeting, became concerned of a potential coup and hastened to the gathering. Upon arriving, Abu Bakr addressed the assembled men with a warning that an attempt to elect a leader outside of Muhammad's own tribe, the Quraysh, would likely result in dissension, as only they can command the necessary respect among the community. He then took Umar and Abu Ubaidah, by the hand and offered them to the Ansar as potential choices. Habab ibn Mundhir, a veteran from the battle of Badr, countered with his own suggestion that the Quraysh and the Ansar choose a leader each from among themselves, who would then rule jointly. The group grew heated upon hearing this proposal and began to argue amongst themselves. The orientalist William Muir gives the following observation of the situation: Umar hastily took Abu Bakr's hand and swore his own allegiance to the latter, an example followed by the gathered men. The meeting broke up when a violent scuffle erupted between Umar and the chief of the Banu Sa'ida, Sa'd ibn Ubadah. This may indicate that the choice of Abu Bakr may not have been unanimous, with emotions running high as a result of the disagreement. Abu Bakr was near-universally accepted as head of the Muslim community (under the title of Caliph) as a result of Saqifah, though he did face contention because of the rushed nature of the event. Several companions, most prominent among them being Ali ibn Abi Talib, initially refused to acknowledge his authority. Among Shi'ites, it is also argued that Ali had previously been appointed as Muhammad's heir, with the election being seen as in contravention to the latter's wishes. Abu Bakr later sent Umar to confront Ali, resulting in an altercation which