According to the Breslau edition of the Nights (vol. ii, p. 11), Nûr ad-Dîn ‘Alî, after his quarrel with his brother Shams ad-Dîn Muḥammad, leaves Cairo in the morning, and arrives at Bilbais at mid-day, then at in the evening. For Macnaghten (vol. i, p. 151) reads ; but there can be no doubt that the original reading was , as will be shown. According to Breslau, Nûr ad-Dîn at sleeps in the , “ post-horse station.” Historically, a place called appears in the Mamlûk postal service as the next station north of Bilbais on the route out of Cairo, and corresponding exactly to the of the tale (e.g. Qalqashandî, ed. 1919, vol. xiv, p. 376); it was at as-Sa‘îdîya that two roads branched respectively to Damietta and Gazza.