[Footnote 38: Procopius (de Bell. Persic. l. i. c. 16)
places the two holy months about the summer solstice. The
Arabians consecrate four months of the year - the first,
seventh, eleventh, and twelfth; and pretend, that in a long
series of ages the truce was infringed only four or six
times, (Sale's Preliminary Discourse, p. 147 - 150, and
Notes on the ixth chapter of the Koran, p. 154, &c. Casiri,
Bibliot. Hispano-Arabica, tom. ii. p. 20, 21.)]