As to fighting, enough; as to masters, I acknowledge Zeus my forefather and Hestia queen of the Scythians only. As for you, instead of gifts of earth and water I shall send such as ought to come to you; and for your boast that you are my master, I say ‘Weep!’” Such is the proverbial “Scythian speech.”

So the herald went to carry this message to Darius; but the Scythian kings were filled with anger when they heard the word “slavery”.

They then sent the division of the Scythians to which the Sauromatae were attached, and which was led by Scopasis, to speak with those Ionians guarding the bridge over the Ister; as for those of the Scythians who remained behind, it was decided that they should no longer decoy the Persians, but attack them whenever they were foraging for provision. So they watched for the time when Darius' men were foraging, and did as they had planned.

The Scythian horse always routed the Persian horse, and when the Persian cavalry would fall back in flight on their infantry, the infantry would come up to their aid; and the Scythians, once they had driven in the horse, turned back for fear of the infantry. The Scythians attacked in this fashion by night as well as by day.

Very strange to say, what aided the Persians and thwarted the Scythians in their attacks on Darius' army was the braying of the asses and the appearance of the mules.