The Iliad 19.400–403

Xanthus and Balius, ye far-famed children of Podarge, in some other wise bethink you to bring your charioteer back safe to the host of the Danaans, when we have had our fill of war, and leave ye not him there dead, as ye did Patroclus. Then from beneath the yoke spake to him the horse Xanthus, of the swift-glancing feet;