[Footnote 78: The wars of Harun al Rashid against the Roman
empire are related by Theophanes, (p. 384, 385, 391, 396,
407, 408.) Zonaras, (tom. iii. l. xv. p. 115, 124,)
Cedrenus, (p. 477, 478,) Eutycaius, (Annal. tom. ii. p.
407,) Elmacin, (Hist. Saracen. p. 136, 151, 152,)
Abulpharagius, (Dynast. p. 147, 151,) and Abulfeda, (p. 156,
166 - 168.)]