History of the Peloponnesian War

The Phoceans and Locrians also began a war at that time against each other.

And the Corinthians and Argives, being now league, went to Tegea to cause it to revolt from the Lacedaemonians, conceiving it to be an important piece [of Peloponnesus], and making account, if they gained it to their side, they should easily obtain the whole.

But when the Tegeates refused to become enemies to the Lacedaemonians, the Corinthians, who till then had been very forward, grew less violent and were afraid that no more of the rest would come in.