a distinguished Twelver traditionist. The book includes a hadith ascribed to the sixth Imam, Ja'far al-Sadiq (), in which the prophet was informed during the Isra about the violent deaths of his family at the hands of Muslims. For his daughter Fatima, the report mentions her miscarriage and death because of her injuries during a raid on her house. This tradition is reported on the authority of Hammad ibn Uthman, a well-known companion of al-Sadiq and a mainstream Shia. As a result, this tradition is again viewed as authentic in Twelver hadith circles. According to Khetia, this book contains the earliest reference to Fatima's miscarriage during Umar's raid. Alternatively, Soufi notes that a slightly different version of the Kitab Sulaym ibn Qays already refers to Fatima's miscarriage during the alleged attack. Kitab al-Irshad This work was compiled by al-Mufid (), another prominent Twelver theologian. Therein, al-Mufid only mentions the Shia belief in the miscarriage of Muhsin without referring to Umar or listing any traditions to support this belief. Considering that al-Mufid writes about violence against Fatima elsewhere, Khetia suspects that he refrained in his Kitab al-Irshad from controversial topics to render the book accessible to most Twelvers without provoking the anger of Sunnis. Dala'il al-imama In his Dala'il al-imama, Ibn Rustam (4/11 century) includes a tradition from Ja'far al-Sadiq on the authority of Abu Basir, a prolific transmitter of hadith and a close companion of the sixth Imam. The rest of the chain of transmission includes some of the most prominent Shia authorities, and this hadith is thus viewed as reliable. The content of the hadith is very similar to the account found in the Kitab Sulaym ibn Qays, except that it adds that Fatima lost Muhsin when she was struck by a client of Umar, named Qunfudh, rather than Umar himself. Death of Fatima Fatima died in 11/632, within six months of Muhammad's death. She was about eighteen or twenty-seven at that time according to Shia and Sunni sources, respectively. The Sunni view is that Fatima died from grief after Muhammad's death. Shia Islam, however, holds that Fatima's injuries during the raid by Umar directly caused her miscarriage and death shortly after. Some sources report that Fatima never reconciled with Abu Bakr and Umar, partly based on a tradition to this effect in the canonical Sunni collection Sahih al-Bukhari. There are also some accounts that Abu Bakr and Umar