Note 324 — Chapter XX · CONQUEST OF PALESTINE. A.H. XV. A.D. 636.
Reading edition
It was foretold (so the tradition runs) in the Jewish books, that Jerusalem would be captured by a king whose name was formed but of three letters (as in that of Omar [**Arabic]), and whose description tallied otherwise so exactly with that of the Caliph that there could be no doubt that he was the personage meant by the prophecy. When this was told to Artabûn, he lost all heart, and departed to Egypt; whereupon the Patriarch sent to make terms with Amru. The tradition is curious, and, however fabulous in appearance, may possibly have had some foundation in fact.