Bhagavad Gita 4.34

तद्विद्धि प्राणिपातेन परिप्रश्नेन सेवया |
उपदेक्षयन्ति ते ज्ञानं ज्ञानिनस्तत्त्वदर्शिन:

Translation

Learn the Truth by approaching a spiritual master. Inquire from him with reverence and render service unto him. Such an enlightened Saint can impart knowledge unto you because he has seen the Truth.