Abu Bakr
Shia view

Shia Muslims believe that Ali ibn Abi Talib was supposed to assume the leadership, and that he had been publicly and unambiguously appointed by Muhammad as his successor at Ghadir Khumm. It is also believed that Abu Bakr and Umar conspired to take over power in the Muslim nation after Muhammad's death, in a coup d'état against Ali.

Most Twelver Shia (as the main branch of Shia Islam, with 85% of all Shias) have a negative view of Abu Bakr because, after Muhammad's death, Abu Bakr refused to grant Muhammad's daughter, Fatimah, the lands of the village of Fadak which she claimed her father had given to her as a gift before his death. He refused to accept the testimony of her witnesses, so she claimed the land would still belong to her as inheritance from her deceased father. However, Abu Bakr replied by saying that Muhammad had told him that the prophets of God do not leave as inheritance any worldly possessions and on this basis he refused to give her the lands of Fadak. However, as Sayed Ali Asgher Razwy notes in his book A Restatement of the History of Islam & Muslims, Muhammad inherited a maid servant, five camels, and ten sheep. Shia Muslims believe that prophets can receive inheritance, and can pass on inheritance to others as well. In addition, Shias claim that Muhammad had given Fadak to Fatimah during his lifetime, and Fadak was therefore a gift to Fatimah, not inheritance. This view has also been supported by the Abbasid ruler al-Ma'mun.

Twelvers also accuse Abu Bakr of participating in the burning of the house of Ali and Fatima. The Twelver Shia believe that Abu Bakr sent Khalid ibn Walid to crush those who were in favour of Ali 's caliphate (see Ridda wars). The Twelver Shia strongly contest the idea that Abu Bakr or Umar were instrumental in the collection or preservation of the Quran, claiming that they should have accepted the copy of the book in the possession of Ali.

However, Sunnis argue that Ali and Abu Bakr were not enemies and that Ali named his sons Abi Bakr in honor of Abu Bakr. After the death of Abu Bakr, Ali raised Abu Bakr's son Muhammad ibn Abi Bakr. The Twelver Shia view Muhammad ibn Abi Bakr as one of the greatest companions of Ali. When Muhammad ibn Abi Bakr was killed by the Umayyads, Aisha, the third wife of Muhammad, raised and taught her nephew Qasim ibn Muhammad ibn Abi Bakr. Qasim ibn Muhammad ibn Abu Bakr's mother was from Ali's family and Qasim's daughter Farwah bint al-Qasim was married to Muhammad al-Baqir and was the mother of Ja'far al-Sadiq. Therefore, Qasim ibn Muhammad ibn Abu Bakr was the grandson of Abu Bakr and the grandfather of Ja'far al-Sadiq.

Zaydi Shias, the largest group amongst the Shia before the Safavid dynasty and currently the second-largest group (although its population is only about 5% of all Shia Muslims), believe that on the last hour of Zayd ibn Ali (the uncle of Ja'far al-Sadiq), he was betrayed by the people in Kufa who said to him: "May God have mercy on you! What do you have to say on the matter of Abu Bakr and Umar ibn al-Khattab?" Zayd ibn Ali said, "I have not heard anyone in my family renouncing them both nor saying anything but good about them...when they were entrusted with government they behaved justly with the people and acted according to the Quran and the Sunnah".

In a similar view, the Ismaili Shias under the leadership of the Aga Khans have also come to accept the caliphates of the first three caliphs, including that of Abu Bakr:

"In the present Imamat the final reconciliation between the Shia and Sunni doctrines has been publicly proclaimed by myself on exactly the same lines as Hazrat Aly did at the death of the Prophet and during the first thirty years after that. The political and worldly Khalifat was accepted by Hazrat Aly in favour of the three first Khalifs voluntarily and with goodwill for the protection of the interests of the Muslims throughout the world. We Ismailis now in the same spirit accept the Khalifat of the first Khalifs and such other Khalifs as during the last thirteen centuries helped the cause of Islam, politically, socially and from a worldly point of view. On the other hand, the Spiritual Imamat remained with Hazrat Aly and remains with his direct descendants always alive till the day of Judgement."
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