Al-Majlisi II, commenting on an authentic tradition narrated from the father of al-Hasan (A.S.), says that Fatima (A.S.) is a truthful martyr, adding,
This incident proves that Fatima, peace and blessings of Allah be upon her, was a martyr, and this is a consecutively reported fact. The reason is that when they confiscated the caliphate, and when most people swore the oath of allegiance to them, they sent for the Commander of the Faithful (A.S.) to participate, but he refused. `Omer brought fire to burn the house and everyone inside it, and they wanted to enter his house by force. Fatima (A.S.) prohibited them at the door, so Qunfath, slave of `Omer, pushed the door on Fatima’s stomach, breaking her rib and causing her to miscarry a fetus whom the Messenger of Allah (A.S.) had named Muhassan. She fell sick because of that, and she died, peace and blessings of Allah be upon her. Both al-Tabari and al-Waqidi have stated in their respective Tarikh books that `Omer ibn al-Khattab went to Ali (A.S.) in a group of men including Asad ibn Hudayr and Salamah ibn Aslam and said, “Get out or I shall burn you all.” This is narrated by Hazanah, too.1
Al-Majlisi has said the following about `Omer ibn al-Khattab: “Our [Shi`a] narratives, and also theirs [Sunnis’] as well, are quite clear in reporting how he terrified Fatima (A.S.) till she miscarried. Consecutively reported narratives have stated that when both men [referring to Abu Bakr and Omer] harmed her, peace and blessings of Allah be upon her, they actually harmed the Messenger of Allah (A.S.) and Ali (A.S.). Both parties [Shi`as and Sunnis] quote the Prophet (A.S.) saying, `Whoever harms Ali (A.S.) harms me.’ Allah, the most Exalted and Sublime, has said, ‘surely those who harm Allah and the Messenger of Allah [with their evil deeds or words] are cursed by Allah in the life of this world and in the hereafter, and He has prepared for them a humiliating chastisement’ (Holy Qur’an, 33:58).”2
Al-Majlisi, may Allah have mercy on him, said the following as he was explaining some supplications:
Referring to the harm done by the first [caliph] and the second to Ali (A.S.) and Fatima (A.S.), and how they wanted to burn Ali’s house with the fire, how they led him by force like a fleeting camel, how they squeezed Fatima (A.S.) with her door till she miscarried Muhassan, so much so that she ordered to be buried at night so that neither the first nor the second would attend her funeral..., etc.”3
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1Mir’at al-`Uqal, Vol. 5, p. 318. Almost the same wording is stated by al-A`lami in his took titled Tarajim al-Nisa’ (women’s biographies), Vol. 2, p. 321.
2Al-Majlisi, Bihar al-Anwar, Vol. 28, pp. 209-10.