Ch.XXII, p.519, f.1
"Following an immemorial custom of the Orient, usage exemplified at the
siege of Bethulie as well as at the tomb of our Lord, the sentinel is a
soldier who sleeps, to his heart's content, at the post which he is
expected to guard." (Comte de Gobineau's "Les Religions et les
Philosophies dans l'Asie Centrale," p. 166.) "We have been able to see
throughout this history what the Persian guards are; their functions
consist principally in sleeping by the trust that they are given to watch
over." (A. L. M. Nicolas' "Siyyid Ali-Muhammad dit le Bab," p. 378.)