Феофилакт Симокатта
Ptolemy (5.18.6) mentions a town called Chabora (Χαβώρα), on the Euphrates, which he places near Nicephorion, and which probably derives its name from the river, and Theophylact Simocatta mentions Ἀβορέων φρούριον, which is, as certainly, the same place.