Mbh 12.96.1b

In addition to this, that Kshatriya who destroys righteousness and transgresses all wholesome barriers does not deserve to be reckoned as a Kshatriya and should be driven from society. A king desirous of obtaining victory should never follow such conduct. What gain can be greater than victory won righteously? The excitable classes (of a kingdom recently conquered) should, without delay, be conciliated with soothing speeches and gifts. This is a good policy for the king to adopt. If instead of doing this, these men be sought to be governed with impolicy, they would then leave the kingdom and side with (the victor's) foes and wait for the accession of calamities (in order that they may then make head against the victor). Discontented men, watching for the calamities of the king, promptly side with the latter's foes, O monarch, in times of danger. An enemy should not be deceived by unfair means, nor should be wounded mortally. For, if struck mortally, his very life may pass away.[284] If a king possessed of little resources be gratified therewith, he would regard life alone to be much.[285] That king whose dominions are extensive and full of wealth, whose subjects are loyal, whose servants and officers are all contented, is said to have his roots firm. That king whose Ritwijas and priests and preceptors and others about him that are well-versed in all scriptures and deserving of honours are duly respected, is said to be conversant with the ways of the world. It was by such behaviour that Indra got the sovereignty of the world. It is by this behaviour that earthly kings succeed in obtaining the status of Indra. King Pratardana, subjugating his foes in a great battle, took all their wealth, including their very grain and medicinal herbs, but left their land untouched. King Divodasa, after subjugating his foes, brought away the very remnants of their sacrificial fires, their clarified butter (intended for libations), and their food.