This is evident from the fact that not a single voice of...
This is evident from the fact that not a single voice of protest or opposition from these cities against Hasan's accession can be located in the sources. Two major reasons can be advanced for this attitude. First, at the time of 'Ali's death almost all the distinguished of the Prophet from among the Muhajirun were dead. Of the six members of the Shura appointed by 'Umar, only Sa'd b. Abi Waqqas was still alive; the other members of the leading elite of the community had also died.
Among the younger nobility such as 'Abd Allah b. al-'Abbas, 'Abd Allah b. az-Zubayr, Muhammad b. Talha, and 'Abd Allah b. 'Umar, none could match Hasan, the elder and dearest grandson of the prophet.
The people of Medina still remembered that ardent love and affection which the Prophet had showered upon his grandsons: that he interrupted his sermon and descended from the pulpit to pick up Hasan, who had stumbled over his long tunic and fallen down while entering the mosque;[^4] that he allowed his grandchildren to climb on his back while he was prostrating himself in prayer.[^5] There are numerous accounts describing extraordinary favours being bestowed by Muhammad on his grandsons; these are preserved not only by the Shi'i sources, but are overwhelmingly transmitted by the Sunni works as well.[^6] Hasan is also unanimously reported to have resembled the Prophet in appearance.[^7] Secondly, the people of Mecca and Medina naturally could not be expected to be pleased to see Mu'awiya, the son of Abu Sufyan, the representative of the clan of Umayya, become their leader.
It was Abu Sufyan who had organized the opposition to Muhammad and had led all the campaigns against him. The Umayyads in general, and the Sufyanids in particular, did not acknowledge Muhammad until the fall of Mecca; their Islam was therefore considered to be of convenience rather than conviction.
Mu'awiya, for his part, depended on the support of the Syrians, whom he had consolidated behind himself, and to whom he had been attached for close to twenty years as governor of the province, and on the support of his large and powerful clan and their clients and allies who swarmed around him.
It was therefore natural, under the circumstances, that the inhabitants of the holy cities, who formed the nucleus of the Islamic Umma, would not oppose Hasan's caliphate, especially since the alternative was the son of Abu Sufyan and Hind.