Mahabharata 12.97.7

12.97.7

rājñā rājaiva yoddhavyastathā dharmo vidhīyate |
nānyo rājānamabhyasedarājanyaḥ kathaṃcana || 7 ||

The kine taken front the enemy by force should be given away to the Brahmanas so that they may drink the milk of those animals. The bulls taken from the enemy should be set to agriculture work or returned to the enemy. It is laid down that a king should fight one that is a king. One that is not a king should never strike one that is a king. If a Brahmana, desirous of peace, fearlessly goes between two contending armies, both should immediately abstain from fight. He would break an eternal rule that would slay or wound a Brahmana. If any Kshatriya breaks that rule, he would become a wretch of his order. 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.