Bhagavadgita 16.28

Bhagavadgītābhāṣya (Śāṅkarabhāṣya) 16.28

pravṛttiṃ ca nivṛttiṃ ca janā na vidur āsurāḥ |
na śaucaṃ nāpi cācāro na satyaṃ teṣu vidyate ||