According to Tarikh Ibn Khaldun Abu Bakr on reaching Saqifah said...

According to Tarikh Ibn Khaldun Abu Bakr on reaching Saqifah said, "We are the companions and kinsmen of the Prophet and hence have a better claim to the Caliphate of the Prophet than anybody else". According to Tarikh Tabari of Ibn Jarir Umar said to Abu Bakr: "Hold out your hand so that I may swear allegiance to you". Abu Bakr said, "No; you should hold out your hand because you are in every way more powerful than I". This tussle continued for sometime.

At last Umar stretched the hand of Abu Bakr and promised loyalty to him and also said, "You should count my strength also combined with yours". According to Tarikh Kamil of Ibn Athir, Umar and others promised loyalty to Abu Bakr, but all or some of the Ansar said, "We will not swear allegiance to anybody except Ali". According to Tarikh Khamis when Abu Bakr got relief from the work of allegiance he returned from Saqifah to Masjidun Nabi and took his seat on the pulpit.

Here, too, he took allegiance till the day came to an end and the people failed to attend the burial of the Holy Prophet. It was Tuesday night. According to Kanzul 'Ummal it is narrated by Urwa that Abu Bakr and Umar were not present at the burial of the Holy Prophet, but were present in the crowd of the "Ansar" (at Saqifa Bani Sa'dah) and the Prophet had been buried before they returned from there.

According to Nihayah of Ibn Athir Jazari, Majma' al-Bihar of Mulla Tahir Qutni and al-Milal wan Nahl of Shahristani, Umar said afterwards that the allegiance of Abu Bakr was an expected event but Allah saved us from its evil. According to Tarikh Abul Fida a group of Hashimites and also Zubayr bin al-'Awam, Miqdad bin 'Amr, Salman Farsi, Abu Dharr, Ammar al-Yasir, Bara' bin Azib etc. siding with Ali kept away from swearing allegiance to Abu Bakr.

It is written in Isti'ab of Abdul Barr that when loyalty was promised to Abu Bakr, Ali did not promise loyalty to him and stayed at home. According to Muruj uz-Zahab of Mas'udi, when on the day of Saqifah allegiance was promised to Abu Bakr, Ali said to Abu Bakr, “You ruined our affairs, did not consult us and did not regard our right". Abu Bakr said, "Your complaint is justified but I have done so for fear of revolt".

According to Rauzatul Ahbab when Abu Bakr became free from the work of seeking allegiance he called Ali through some Muhajir and Ansar. Ali came and asked, "Why have I been called?" Umar said, "You have been called to promise loyalty as others have done".