The Histories · 9.34

By saying this he followed the example of Melampus in his request, if one may compare royal power with mere citizenship; for Melampus on his part, when the women in Argos had been seized by madness, and the Argives endeavoured to hire him to come from Pylos and to cause their women to cease from the malady, proposed as payment for himself the half of the royal power; and the Argives did not suffer this, but departed: and afterwards, when more of their women became mad, at length they accepted that which Melampus had proposed, and went to offer him this: but he then seeing that they had changed their minds, increased his demand, and said that he would not do that which they desired unless they gave to his brother Bias also the third share in the royal power. And the Argives, being driven into straits, consented to this also.

Herodotus of Halicarnassus · trans. G. C. Macaulay, 1890
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