Mbh 12.71.2b

Men become deeply devoted to that king who discharges the duty of protection properly, who is endued with liberality, who is steady in the observance of righteousness, who is vigilant, and who is free from lust and hate. Never desire to fill thy treasury by acting unrighteously or from covetousness. That king who does not act in accordance with the scriptures fails to earn wealth and religious merit. That king who is mindful only of the means of acquiring wealth, never succeeds in acquiring both religious merit and wealth. The wealth again that he acquires (by such means) is seen to be lavished on unworthy objects.[227] That avaricious king who through folly oppresses his subjects by levying taxes not sanctioned by the scriptures, is said to wrong his own self. As a person desirous of milk never obtains any by cutting off the udders of a cow, similarly a kingdom afflicted by improper means, never yields any profit to the king.[228] He who treats a milch cow with tenderness always obtains milk from it. Similarly, the king who rules his kingdom by the aid of proper means, reaps much fruit from it. By protecting a kingdom properly and ruling it by the aid of judicious means, a king, O Yudhishthira, may succeed in always obtaining much wealth. The earth, well protected by the king, yields crops and gold (to the ruler and the ruled) even like a gratified mother yielding milk to her child. Imitate the example, O king, of the flowerman and not of the charcoal-maker. Becoming such and discharging the duty of protection, thou mayst be able to enjoy the earth for ever.[229] If in attacking an enemy's kingdom thy treasury becomes exhausted, thou mayst refill it by taking wealth from all except Brahmanas. Let not thy heart be moved, even when thou art in great distress, upon seeing Brahmanas possessed of wealth. I need not speak then of what thou shouldst do when thou art in affluence.