This volume covers the years 21-23/641-43 of the caliphate of ʿUmar ibn al-Khaṭṭāb. It can be divided into two distinct and almost equal parts: the first concerning the Muslim conquests in Iran and the east, and the second concerning ʿUmar himself, his assassination, and an assessment of the caliph and the man.
The volume begins with the caliphal order to the Muslim troops, recently victorious at the famous battle...