Mukhtar al-Thaqafi
Kufa's people invited Husayn to go to Kufa and be their Imam, but they did not back him and his family against Kufa's governor, who massacred them in Karbala. Thus they thought themselves responsible for the tragedy of Karbala and tried to compensate for it by throwing themselves into the struggle to obtain vengeance for Husayn's blood. They chose Sulayman b. Surad al Khuza'I as their leader and called themselves Tawwabun (penitents). They were seeking an opportunity for action, until Mukhtar al-Thaqafi came to Kufa and claimed to represent Muhammad ibn al-Hanafiyyah. Most of Tawwabun, however, did not accept Mokhtar as their leader and led a useless battle in which most of them were killed. Mokhtar, instead, soon gained the authority of a leader and took vengeance on those who were involved in Husayn's killing. Umar ibn Sa'ad and Shemr were executed and their heads were sent to Muhammad ibn al-Hanafiyyah. Ubayd Allah ibn Ziyad was also killed in the battle on the Zab; his head was taken to the place in Kufa where Ubaid Allah had received the head of Husayn.