Ibne Abde Rabb has written in Iqdul Farid:
Abu Bakr ordered Umar to go and bring out [those who had taken
refuge in the house of Lady Zahra (s)] and if they resist they should be
fought. Umar set out for the house of Fatima
carrying a burning torch. When Fatima (s) saw
this, she cried: O son of Khattab, have you brought fire to burn down my place?
He replied: Yes, if you don’t enter that in which the Ummah has entered
(allegiance of Abu Bakr)…[1]