What is the authenticity of the Shiite claim that Omar ibn al-Khattab assaulted Fatimah al-Zahra and caused the door of her house to fall on her, which led to her death?

Summary of the Answer:

Historians mention the incident of Omar ibn al-Khattab coming to the house of Fatima, may Allah be pleased with all of them, to request allegiance to Abu Bakr al-Siddiq. Ali, Zubair, and some relatives of the Prophet were delayed in giving allegiance due to their preoccupation with preparing the Prophet for burial, and Ali's view that it was wrong to rush the matter of succession before the burial. Omar went to Fatima's house and asked her to inform Ali and Zubair of the necessity of giving allegiance, warning of discord. They all gave allegiance thereafter, confirming Abu Bakr's rightful claim to the caliphate.

Authentic Narrations: - Aslam, Omar's freed slave, narrated that Omar said to Fatima: "By Allah, that will not prevent me, if these men gather with you, from ordering that the house be burned upon them." So they dispersed and gave allegiance to Abu Bakr. (Sound chain of narration) - Ibrahim ibn Abd al-Rahman ibn Awf narrated that Abd al-Rahman ibn Awf was with Omar, and that Muhammad ibn Maslamah broke Zubair's sword. Then Abu Bakr delivered a sermon, apologizing, and the Muhajirun accepted it from him. Ali and Zubair said: "We were only angered because we were delayed from consultation, and we consider Abu Bakr the most deserving of it." (Sound chain of narration according to the conditions of Bukhari) - Al-Zuhri narrated that some men from the Muhajirun entered Fatima's house with weapons, so Omar came to them in a group, and one of them took Zubair's sword and broke it. (Strong narration)

All these narrations do not mention fighting or aggression against Fatima, but rather a warning and an emphasis on the necessity of giving allegiance.

Weak and Fabricated Narrations: - Al-Baladhuri's narration that Omar came with a firebrand to threaten to burn Fatima's house, and his saying: "And that is stronger in what your father brought." This chain of narration is weak and deceptive, and contradicts Ali's strength and courage, the firmness of his voluntary allegiance, and the companions' respect for the Prophet and his family. - The narration of Abu Bakr al-Siddiq regretting "uncovering Fatima's house" during his illness. This narration is denounced due to the weakness of its narrator, Ulwan ibn Dawud al-Bajali, and the disturbance in its chain of narration.

What the Rawafid (a derogatory term for some Shia) transmit, that Omar burned Fatima's house, struck her, and caused her to miscarry, is a lie and a fabrication that has no basis in the books of Muslims. It is something upon which the people of Islam have agreed to be false. Some Shia scholars themselves have denied these claims, affirming that such actions are not befitting of the companions or Arab character, and that Fatima did not mention anything of that in her sermons and complaints.