Histories

When the Lacedaemonians learned that Cleomenes was doing this, they took fright and brought him back to Sparta [22.4417,37.0667] (Perseus) Sparta to rule on the same terms as before. Cleomenes had already been not entirely in his right mind, and on his return from exile a mad sickness fell upon him: any Spartan that he happened to meet he would hit in the face with his staff.

For doing this, and because he was out of his mind, his relatives bound him in the stocks. When he was in the stocks and saw that his guard was left alone, he demanded a dagger; the guard at first refused to give it, but Cleomenes threatened what he would do to him when he was freed, until the guard, who was a helot, was frightened by the threats and gave him the dagger.