Chapter 12 · verse 10 · gita.yoga.org

Bhagavad Gita 12.10

अभ्यासेऽप्यसमर्थोऽसि मत्कर्मपरमो भव।मदर्थमपि कर्माणि कुर्वन् सिद्धिमवाप्स्यसि

If you are unable to practice even this Abhyasa Yoga, be intent on doing actions for My sake; even by doing actions for My sake, you will attain perfection.