The Shi'a believe that both Abu Bakr and Umar were responsible for killing both, Muhammad's daughter and grandson. For this section please refer to the Book Al Imamiah Val Siyasiyah by Ibn Qutaiba Deinevari, where we clearly see reference to Fatima condemning and Cursing the two.
As Fatima was dying, she asked Imam Ali to bury her in secret; she did not want Abu Bakr and Umar at her funeral.
Some Shi'a believe that Fatima was buried in the Jannat al-Baqi cemetery, in Medina, and that her grave there is now marked. Others believe that she might have been buried in other locations in Medina and that Shi'a should pray at all three locations to be sure of honoring her grave. 
Mohsin b. Ali's (a.s.) martyrdom is widely documented by renowned scholars across eras of both the sects as..........read more
We give our condolences to the Imam of the time, hadhrat Hujjat (a.t.f.s.) on the martyrdom of Mohsin, the unborn child of the only daughter of the holy Prophet of Islam, the mercy to the mankind.