Bhagavad Gita 4.34
तद्विद्धि प्रणिपातेन परिप्रश्नेन सेवया।
उपदेक्ष्यन्ति ते ज्ञानं ज्ञानिनस्तत्त्वदर्शिनः।।4.34।।
Tadviddhi pranipatena pariprashnena sevaya
Upadekshyanti te gyanam gyaninastattvadarshinah
Simple meaning, written by AIKnow that by prostration, by questioning, and by service, the wise seers of truth will teach you that knowledge.