Mention of the Caliphate of Abu Hafs 'Umar b. al-Khattab, may Allah be pleased with him.
ذِكْرُ خِلَافَةِ أَبِي حَفْصٍ عُمَرَ بْنِ الْخَطَّابِ رَضِيَ اللَّهُ عَنْهُ
