Note 373 — Chapter XXIV · CONQUEST OF EGYPT. A.H. XX. A.D. 641.

Here again we see the same nervous fear on the part of Omar, lest his soldiers, wandering too far, or beyond some great river, should be surprised and cut off, as led him at the first to forbid an advance on Persia. Ghîzeh, properly Jîzeh, j in Egypt being pronounced as hard g.