information:extraction, linguistic:paraphrasing
During the caliphate of Abu Bakr, Umar and Uthman

During the caliphate of Abu Bakr and Umar, Husayn was present at some events such as testifying about the story of Fadak. According to a narration, Husayn, while the second caliph was sitting on the pulpit of Muhammad and giving a speech, objected to him for sitting on the pulpit of Muhammad, and Umar also stopped his sermon and came down from the pulpit. During the time of Uthman, he defended Abu Dharr al-Ghifari, who had preached against some of the actions of the tyrants and was to be exiled from Medina.

According to several narrations, Ali asked Hasan and Husayn to defend the third Caliph during the Siege of Uthman and carry water to him. According to Vaglieri, when Hasan entered Uthman's house, Uthman was already assassinated. Another report says that Uthman asked Ali's help. The latter send Husayn in response. Then Uthman asked Husayn if he was able to defend himself against rebels. Husayn demurred, so Uthman sent him back. It is also narrated that Uthman's cousin, Marwan ibn Hakam, have said Husayn: "Leave us, your father incites the people against us, and you are here with us!" Haeri writes in the Encyclopedia of the Islamic World: According to some narrations, Husayn or Hasan were wounded in the case of defending Uthman.