Kautilya's Arthashastra 1.3.16

1.3.16

tasmāt svadharmaṃ bhūtānāṃ rājā na vyabhicārayet /
svadharmaṃ saṃdadhāno hi pretya ceha ca nandati //

Hence the king shall never allow people to swerve from their duties; for whoever upholds his own duty, ever adhering to the customs of the Aryas, and following the rules of caste and divisions of religious life, will surely. be happy both here and hereafter. For the world, when maintained in accordance with injunctions of the triple Vedas, will surely progress, but never perish.