Bhagavad Gita 6.20

यत्रोपरमते चित्तं निरुद्धं योगसेवया। यत्र चैवात्मनाऽऽत्मानं पश्यन्नात्मनि तुष्यति

yatroparamate chittaṁ niruddhaṁ yoga-sevayā yatra chaivātmanātmānaṁ paśhyann ātmani tuṣhyati

That in which the mind finds rest, quieted by the practice of yoga: that in which he, seeing the Self by the Self, in the Self is satisfied;