Mahabharata 12.89.27

12.89.27

prājñaḥ śūro dhanasthaśca svāmī dhārmika eva ca |
tapasvī satyavādī ca buddhimāṃścābhirakṣati || 27 ||

Agriculture, rearing of cattle, trade and other acts of a similar nature, should be caused to be carried on by many persons on the principle of division of labour. If a person engaged in agriculture, cattle-rearing, or trade, becomes inspired with a sense of insecurity (in consequence of thieves and tyrannical officers), the king, as a consequence, incurs infamy. The king should always honour those subjects of his that are rich and should say unto them, 'Do ye, with me, advance the interest of the people.' In every kingdom, they that are wealthy constitute an estate in the realm. Without doubt, a wealthy person is the foremost of men. He that is wise, or courageous, or wealthy or influential, or righteous, or engaged in penances, or truthful in speech, or gifted with intelligence, assists in protecting (his fellow subjects).