The Oxus

The Iranian name of the river, Vaxšu, the source of all the others. In the Avestan world the great river of Bactria was not merely a watercourse but a divine being, Vaxšu, a spirit of the waters; the name survives directly in the Wakhsh, the river’s major eastern headstream, which still carries it. From this Iranian Vaxšu descend the Greek Ōxos and Latin Oxus, and to it corresponds the Indian Vakṣu.

Vaxšu is the headwater of the river’s whole family of names, the form in which the Oxus was first sacred. Where the Greeks and Romans took the name as a bare label, the Iranians invested it with divinity, the river-spirit of the land it watered. The same reverence runs through the Indian Vakṣu, set among the holy rivers of the world; the Oxus was, to both the Iranian and the Indian branches of the Aryan world, not just a boundary but a god, long before it was the Ōxos of Alexander’s surveyors.

The Greek name of the river, Ōxos, taken from the Iranian Vaxšu; it enters Greek geography with Alexander, whose historians describe the army’s hard crossing of its broad, silt-laden stream in pursuit of the regicide Bessus. Strabo and the later geographers make it the great river of Bactria and the boundary of the settled Iranian lands against the steppe.

Ōxos is the Iranian river-name in Greek dress, the form through which the river became known to the West as the Oxus, a name it kept in European usage into modern times. Behind it stands the Vaxšu of the Avesta, the river and its divine spirit, and beside it the Indian Vakṣu; the Greek, characteristically, took the foreign name as a bare sound, Ōxos, with none of the religious weight the Iranians gave their river. It is the Western witness to a name the Iranian and Indian worlds had already shared for a thousand years.

The Sanskrit name of the Oxus, Vakṣu, the Indian cognate of the Avestan Vaxšu, listed in the Puranic geographies among the great rivers that flow from the central mountains of the world. The Indian tradition, like the Iranian, counted the Oxus among the sacred rivers, set in the cosmological scheme of the continents and their waters that the Puranas elaborate.

Vakṣu is the Indo-Aryan witness to the shared Indo-Iranian river-name, the same Vaxšu preserved on the eastern, Indian side of the divide. That the river beyond the Hindu Kush kept a recognizably common name in both the Avesta and the Puranas is a measure of how unified the early Indo-Iranian world had been: the Oxus was a holy river to peoples who had drifted apart into Iran and India yet still called it, in cognate words, by one name. The Greek Ōxos and Latin Oxus are the outsiders’ echo of what the two Aryan traditions held in common.

The Latin name of the river, Oxus, taken from the Greek; Pliny places it among the great rivers of the East, and Curtius follows Alexander’s army across it into Sogdiana. To the Romans, who never came near it, the Oxus was a name at the edge of the known world, the river beyond which lay Scythia and the unmapped north.

The Latin fixed the form Oxus in the Western learned tradition, where it remained the river’s name for nearly two thousand years, until the modern Amu Darya displaced it. Through Greek and Latin the Iranian Vaxšu thus had a long second life in European geography under a name its own people would scarcely have recognized, the river-god of the Avesta reduced, in the West, to a line on a map of Alexander’s conquests.

The Arabic name of the Oxus, Jayḥūn, by which the medieval geographers identified the great river of Khurasan with the Gihon, one of the four rivers that flow out of Eden in Genesis. The Muslim geographers, inheriting the biblical scheme of Paradise’s four rivers, looked for them in the lands they knew and placed two in Central Asia: the Oxus as Jayḥūn, the Gihon, and the Jaxartes as Sayḥūn, the Pishon.

The renaming is a small marvel of sacred cartography. The Gihon that this atlas also meets on the Nile, where Jewish and Christian tradition had located it, was claimed by the Islamic geographers for the Oxus instead, two thousand miles east; the rhyming pair Jayḥūn and Sayḥūn fixed Eden’s rivers on the two great streams of Turkestan. A river the Iranians had worshipped as Vaxšu and the Greeks charted as Ōxos thus became, for the medieval Muslim world, a river of Paradise, the Gihon flowing past Bukhara and Khwarazm to the Aral Sea.