Charles Ellicott Commentary Daniel 8:16

"And I heard a man`s voice between [the banks of] the Ulai, which called, and said, Gabriel, make this man to understand the vision." — Daniel 8:16 (ASV)

Between the ... Ulai.— The city, as it would appear, stood between the two branches of the river. The two branches were the Eulæus and the Choaspes.