The Oxus or Amu Darya River in Matthew Arnold's words

But the majestic River floated on,
Out of the mist and hum of that low land,
Into the frosty starlight, and there moved,
Rejoicing, through the hushed Chorasmian waste,
Under the solitary moon: — he flowed
Right for the polar star, past Orgunjè,
Brimming, and bright, and large: then sands begin
To hem his watery march, and dam his streams,
And split his currents; that for many a league
The shorn and parcelled Oxus strains along
Through beds of sand and matted rushy isles —
Oxus, forgetting the bright speed he had
In his high mountain-cradle in Pamere,
A foiled circuitous wanderer: — till at last
The longed-for dash of waves is heard, and wide
His luminous home of waters opens, bright
And tranquil, from whose floor the new-bathed stars
Emerge, and shine upon the Aral Sea.

– Matthew Arnold, Sohrab and Rustum

from Wikipedia