Verse
तद्विद्धि प्रणिपातेन परिप्रश्नेन सेवया ।उपदेक्ष्यन्ति ते ज्ञानं ज्ञानिनस्तत्त्वदर्शिनः ॥
Learn that by worshipping the feet of the teacher, by questioning and by service; the men of knowledge who have seen (not those who know merely by the intellect) the true principles of things, will instruct thee in knowledge.
Gītā 4·34