The History Of Herodotus Volume 1 of 2
Page: 229120. When the Scythians heard this answer reported, they planned not to fight a pitched battle openly, since these did not join them as allies, but to retire before the Persians and to drive away their cattle from before them, choking up with earth the wells and the springs of water by which they passed and destroying the grass from off the ground, having parted themselves for this into two bodies; and they resolved that the Sauromatai should be added to one of their divisions, namely that over which Scopasis was king, and that these should move on, if the Persians turned in that direction, straight towards the river Tanaïs, retreating before him by the shore of the Maiotian lake; and when the Persian marched back again, they should come after and pursue him. This was one division of their kingdom, appointed to go by the way which has been said; and the other two of the kingdoms, the large one over which Idanthyrsos was king, and the third of which Taxakis was king, were to join together in one, with the Gelonians and the Budinoi added to them, and they also were to retire before the Persians one day's march in front of them, going on out of their way and doing that which had been planned. First they were to move on straight for the countries which had refused to give their alliance, in order that they might involve these also in the war, and though these had not voluntarily undertaken the war with the Persians, they were to involve them in it nevertheless against their will; and after that they were to return to their own land and attack the enemy, if it should seem good to them in council so to do.
121. Having formed this plan the Scythians went to meet the army of Dareios, sending off the best of their horsemen before them as scouts; but all 112 the waggons in which their children and their women lived they sent on, and with them all their cattle (leaving only so much as was sufficient to supply them with food), and charged them that they should proceed continually towards the North Wind. These, I say, were being carried on before:
122, but when the scouts who went in front of the Scythians discovered the Persians distant about three days' march from Ister, then the Scythians having discovered them continued to pitch their camp one day's march in front, destroying utterly that which grew from the ground: and when the Persians saw that the horsemen of the Scythians had made their appearance, they came after them following in their track, while the Scythians continually moved on. After this, since they had directed their march towards the first of the divisions, the Persians continued to pursue towards the East and the river Tanaïs; and when the Scythians crossed over the river Tanaïs, the Persians crossed over after them and continued still to pursue, until they had passed quite through the land of the Sauromatai and had come to that of the Budinoi.