[Footnote 48: Cosa, the fifth ancestor of Mahomet, must have usurped the Caaba A.D. 440; but the story is differently told by Jannabi, (Gagnier, Vie de Mahomet, tom. i. p. 65 - 69,) and by Abulfeda, (in Vit. Moham. c. 6, p. 13.)]