This account is based principally on the account of Abu Mikhnaf (d. 132 A.H.) as it has been preserved in the writings of al‑Tabari. The works of other historians such as Ibn al‑A'tham, al‑Dinawari, and al‑Ya'qubi have also been referred to. Before dis­cussing the events that culminated in the murder of the Prophet's grandson, it will be necessary to discuss briefly, the situation that had developed in al‑Kufa during the previous twenty years.