the strongest opinion, the one backed by the most solid daleel, is that ali (ra) gave his bayah not once but twice to abu abakr - the day after the shura and again after the death of fatima (ra). there others - the minority - who're of the opinion that he gave bayah to abu bakr after the death of fatima (ra) (due to different reasons and among them being the inheritance issue, out of respect for his wife). but there's ijma on this: ali never doubted the the legitimacy of the khalifa of abu bakr and he never withhold recognition from it. and further more, there's a major difference between recognition and bayah/allegiance.
but the problem with you, i suspect, is that you're shia or a sufi. and lets be honest, shias and sufis are brain-dead jahils. for them, the only to respect someone is to worship them. respect = worship. so i suspect you made this slanderous thread against the one whom allah swt is pleased with because you don't see anyone worshiping ali and his household on this forum - besides djibsomali and maybe hutuking - and mistook this as being disrespectful towards ali and his household. and allah knows best.Reports differ about the timing of 'Ali's oath of allegiance to Abu Bakr. Hafiz Abu Bakr al-Baihaqi relates on the authority of Abu Sa'eed al-Khudri: 'Abu Bakr ascended the pulpit and cast a glance on the people. He did not find 'Ali among them. So he sent for 'Ali and said, "O brother and son-in-law of the Prophet, would you like that the unity among Muslims should be torn to pieces ?" 'Ali replied, "I have no grudge or complaint, O Caliph, of the Prophet." He immediately swore allegiance to him. Al-Baihaqi adds that 'Ali uttered these words or this was their purport.
Ibn Kathir adds : 'A significant aspect of this affair is that 'Ali took the oath of allegiance on the very first day or the day following the death of the Prophet. This is correct in point of fact since 'Ali never gave up Abu Bakr's companionship nor he absented himself in any congregational prayer. '
It is commonly believed that 'Ali did not initially take the oath of fealty to Abu Bakr in deference to the wishes and sentiments of Fatima. He took the oath publicly six months later when Fatima had died. Ibn Kathir and other historians are of the view that the subsequent oath of allegiance by 'Ali was in confirmation of the first one. A number of reports to this effect are on record in the six authentic compilations of the Traditions [Hadiths] and other books.