We all know that later on...
We all know that later on, the Ansar became dissatisfied with the rule of the Quraysh. According to Zubayr Ibn Bakkar, the people of Aws said, “It was Bashir Ibn Sa'd of Khazraj who swore allegiance first.
And the people of Khazraj said it was Usayd Ibn Huďayr.” [^6] Abu Bakr knew about such a contention, so in Saqifa he said, “If the men of Aws assume power, the people of Khazraj will not accept it and there will be bloody fights among them.”[^7] According to Ya'qubi, 'Abd al-Rahman Ibn 'Awf, too, was in Saqifa. This however, is not true. Whatever Ya'qubi has quoted from him were told a day later in the mosque.
He addressed the Ansar and stated, “Although you are people of essential excellence (but) there is no likeness of Abu Bakr, 'Umar and 'Ali (a) among you.” Mundhir Ibn Arqam stood up and said, “We do not deny excellence of the people you named.
If one of these people seeks caliphate (referring to Imam 'Ali (a)), there will be no objection to his request.” Then Bashir Ibn Sa'd and Usayd Ibn Huďayr rose and swore allegiance; and many followed them so that Sa'd Ibn 'Ubada was about to be killed in the stampede.[^8] Bara' Ibn 'Azib went to the Hashimites and said, “They swore allegiance to Abu Bakr.” The men of the Hashimites said Muslims would never do that in their absence.
“We are the offspring of Muhammad (S) !” 'Abbas said, “I swear by the God of Ka'ba, they did.” Ya'qubi adds, “The Muhajirun and the Ansar had no doubts on Imam 'Ali (a).”[^9] Tabari and Ibn Athir have said the Ansar or a number of them present in Saqifa said they swore allegiance only to 'Ali (a).[^10] According to Ibn Qutayba, Hubab Ibn Mundhir took his sword off its sheath when he saw the Ansar swearing allegiance but they disarmed him.
He addressed the Ansar, “You must wait and see your children begging for a bowl of water and a loaf of bread in the doorsteps of the Quraysh.”[^11] According to historians, the most important reasoning of Abu Bakr and 'Umar was Abu Bakr's kinship with the Prophet (S) and his age, although there are some references to his merits present in some documents.