A class on Bhagavad Gita 4.20 given by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada on April 9, 1974 in Mumbai, India.
Bhagavad Gita 4.20
tyaktvā karma-phalāsaṅgaṁ
nitya-tṛpto nirāśrayaḥ
karmaṇy abhipravṛtto ’pi
naiva kiñcit karoti saḥ
Abandoning all attachment to the results of his activities, ever satisfied and independent, he performs no fruitive action, although engaged in all kinds of undertakings.