Banu Hashim, Muhammad's clan and his closest kin. Returning to Ibn Ishaq's account, Abu Bakr then reportedly invited the Ansar to choose Umar or Abu Ubaida as Muhammad's successor. Umar reports that he was displeased with this offer because he considered Abu Bakr to be more entitled to rulership than himself. Madelung regards this as a manoeuvre by Abu Bakr to present himself as an acceptable alternative to Umar and Abu Ubaida for the Ansar, adding that Abu Ubaida lacked prominence while Umar had apparently just discredited himself before the meeting by publicly denying Muhammad's death. Violence at the Saqifa Ibn Ishaq's account continues that Habab ibn Mundhir, a veteran of the Battle of Badr, countered Abu Bakr with the suggestion that the Quraysh and the Ansar should choose their separate rulers among themselves. A heated argument then followed, reports Umar, until he asked Abu Bakr to stretch his hand and pledged allegiance to him. Others followed suit, he claims, adding that, "Then we jumped upon Sa'd until one of them called out: 'You killed Sa'd ibn Ubada.' I said, 'May God kill Sa'd.'" The outburst of violence at the Saqifa indicates that a substantial number of the Ansar must have initially refused to follow Umar's lead, writes Madelung. Otherwise, he argues, there would have been no need to beat up their chief Sa'd ibn Ubada. Sa'd remained defiant until his murder by a "jinn" during the reign of Umar, possibly at the instigation of the second caliph. Ali Absence from the Saqifa Muhammad's cousin and son-in-law was preparing Muhammad's body for burial, alongside other close relatives, and was likely unaware of the ongoing Saqifa meeting. Following Umar's pledge to Abu Bakr, the Saqifa account of the Kufan al-Nakha'i () adds, "But the Ansar, or some of them, said: 'We will not swear allegiance to anyone but Ali.'" Caetani dismisses this report because of its Shia coloring, while Madelung accepts it, noting that al-Nakha'i is not known for Shia sympathies and his account is otherwise distinctly Sunni. Similarly, al-Ya'qubi writes that the Ansar al-Mundhir ibn Arqam interrupted the proceedings and nominated Ali for succession. The contemporary Jafri, Lalani, and Momen state that some advocated the case of Ali at the Saqifa. Madelung is not certain whether the succession of Ali was discussed at the Saqifa but considers it likely, commenting that the Ansar would have naturally turned to Ali because