Chapter 4 · verse 34 · gita.yoga.org

Bhagavad Gita 4.34

तद्विद्धि प्रणिपातेन परिप्रश्नेन सेवया। उपदेक्ष्यन्ति ते ज्ञानं ज्ञानिनस्तत्त्वदर्शिनः

Know that the wise who have realized the truth will instruct thee in that knowledge through long prostration, supplication, and service.