It is pertinent here to allude to the episode of Harrah. Muslim ibn Aqaba attacked Medina in 64 H., creating more horror and terror and causing total isolation of the Progeny of Prophet Muhammad (S). The Harrah incident occurred when Yazid in 62 H. appointed an inexperienced young general of Damascus (erstwhile Shaam) as the ruler of Medina.
The new ruler decided to reconcile the citizens of the city with Yazid. Hence, he invited a group of them to go to Yazid in Damascus. They went to Damascus and met Yazid who paid a large amount of money (50,000 to 10,000 drachmas) to them. Being the Companions of the Prophet Muhammad(S) or their descendents, they were outraged after witnessing Yazid's system.
Upon their return to Medina, Abdullah - the son of "Hanzalah Ghasil-ul-Malaa'ikah" whose body was washed by the angels after his martyrdom - rose against the central government and announced autonomy for Medina. Yazid sent Muslim ibn Aqaba to Medina who created one of the saddest tragedies recorded in the history books. The event added to the horror and fear of the people.