[Footnote 4: D'Herbelot, Biblioth. Orient. p. 477. Pocock,
Specimen Hist. Arabum, p. 64, 65. Father Pagi (Critica,
tom. ii. p. 646) has proved that, after ten years' peace,
the Persian war, which continued twenty years, was renewed
A.D. 571. Mahomet was born A.D. 569, in the year of the
elephant, or the defeat of Abrahah, (Gagnier, Vie de
Mahomet, tom. i. p. 89, 90, 98;) and this account allows two
years for the conquest of Yemen.]