Ulai (û'lâi or û'la-î), strong water? A river of Susiana, on whose banks Daniel saw his vision of the ram and he-goat. Daniel 8:2-16. Recent explorations have shown that the river Choaspes (Kerkhah) divides about 20 miles above Susa. The eastern branch, which received the Shapur and fell into the Kuran, was probably the Ulai. This bifurcation of the stream explains the otherwise difficult passage, "I heard a man's voice between the banks of Ulai," Daniel 8:16—that is, between the banks of the two streams of that divided river.