Mbh 12.120.2a

"'Bhishma said, "The protection of all creatures is regarded as the highest duty of the Kshatriya. Listen now to me, O king, as to how the duty of protection is to be exercised. A king conversant with his duties should assume many forms even as the peacock puts forth plumes of diverse hues. Keenness, crookedness, truth, and sincerity, are the qualities that should be present in him. With thorough impartiality, he should practise the qualities of goodness if he is to earn felicity. He must assume that particular hue or form which is beneficial in view of the particular object which he seeks to accomplish.[354] A king who can assume diverse forms succeeds in accomplishing even the most subtle objects. Dumb like the peacock in autumn, he should conceal his counsel. He should speak little, and the little he speaks should be sweet. He should be of good features and well versed in the scriptures. He should always be heedful in respect of those gates through which dangers may come and overtake him, like men taking care of breaks in embankments through which the waters of large tanks may rush and flood their fields and houses. He should seek the refuge of Brahmanas crowned with ascetic success even as men seek the refuge of lordly rivers generated by the rain-water collected within mountain lakes. That king who desires to amass wealth should act like religious hypocrites in the matter of keeping a coronal lock.[355] The king should always have the rod of chastisement uplifted in his hands. He should always act heedfully (in the matter of levying his taxes) after examining the incomes and expenses of his subjects like men repairing to a full-grown palmyra for drawing its juice.[356] He should act equitably towards his own subjects; cause the crops of his enemies to be crushed by the tread of his cavalry; march against foes when his own wings have become strong; and observe all the sources of his own weakness.