Xenophon Hellenica 7.2.10

[10]
  In the following year likewise the Argives and all ¹ the Arcadians invaded the territory of Phlius. The reason for their continually besetting the Phliasians was partly that they were angry with them, and partly that they had the country of the Phliasians between them, and were always in hope that through want of provisions they would bring them to terms. But on this invasion also the horsemen and the picked troops of the Phliasians, along with the horsemen of the Athenians who were present, attacked them at the crossing of the river; and having won the victory, they made the enemy retire under the heights for the rest of the day, just as if they were keeping carefully away from the corn in the plain as the property of friends, so as not to trample it down.