Chapter 3 · verse 9 · gita.yoga.org

Bhagavad Gita 3.9

यज्ञार्थात्कर्मणोऽन्यत्र लोकोऽयं कर्मबन्धनः। तदर्थं कर्म कौन्तेय मुक्तसंगः समाचर

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.