यज्ञार्थात्कर्मणोऽन्यत्र लोकोऽयं कर्मबन्धनः। तदर्थं कर्म कौन्तेय मुक्तसंगः समाचर।।3.9।।
yajñārthāt karmaṇo ’nyatra loko ’yaṁ karma-bandhanaḥ tad-arthaṁ karma kaunteya mukta-saṅgaḥ samāchara
The world is bound by actions other than those performed for the sake of sacrifice; do thou, therefore, O son of Kunti (Arjuna), perform actions for that sake alone, free from attachment.