Note 395 — Chapter XXVII · THE LATER YEARS OF OMAR’S REIGN—DOMESTIC EVENTS. A.H. XVII.-XXIII. A.D. 638–644.
Reading edition
Omar presided every year, excepting the first of his Caliphate, when the struggle with the Byzantine and Persian empires was at its height. He is also said to have thrice visited Mecca for the Omra, or Lesser Pilgrimage. (Life of Mahomet, p. xii.)