Title: Rasāʾil al-Fārūq ʻUmar ibn al-Khaṭṭāb ilá kāffat al-amṣār al-Islāmīyah
Subjects: Correspondence, Sources, Caliphs, History
Places: Islamic Empire
People: ʻUmar ibn al-Khaṭṭāb Caliph (d. 644)
Time periods: 622-661