Auras

Herodotus:
"And these are those that make it large: indeed through the Scythian
country the five that flow on one hand, the one that the Scythians
call the Porata and the Greeks the Pyretos, and another, the
Tiarantos as well as the Araros, the Naparis and the Ordessos --the
first of the rivers spoken of, large and flowing to the east,
communicates its water to the Ister, while the second spoken of, the
Tiarantos, is more to the west and smaller, whereas indeed the
Araros, the Naparis and the Ordessos flow through the middle of
those and pour into the Ister-- those on one hand are the Scythian
rivers original to the place that join in filling it; on the other
from the Agathyrsians the Maris river flows and is mixed with the
Ister and from Haemos' peaks three other large ones flow to the
north wind and pour out into it, the Atlas, the Auras and the
Tibisis, while through Thrace and the Crobuzian Thracians flow the
Athrys, the Noes and the Aptanes and they discharge into the Ister,
from the Paeonians and a mountain, Rhodope, the Scios river splits
the Haemos in its middle and discharges into it, from the Illyrians
flows to the north wind the Angros river and pours into the
Triballician plain and into the river Brongos and the Brongos into
the Ister (thus the Ister receives both that are large) and from the
country further inland of the Ombricians the Carpis river and
another, the Alpis, even those, to the North wind flow and discharge
into it."

What is nowadays name of river Auras - Osum or Marica?

Auras > Aurum > Ausum > Osum ?

Regards, Aigius