तद्विद्धि प्रणिपातेन परिप्रश्नेन सेवया। उपदेक्ष्यन्ति ते ज्ञानं ज्ञानिनस्तत्त्वदर्शिनः
tad viddhi praṇipātena paripraśhnena sevayā upadekṣhyanti te jñānaṁ jñāninas tattva-darśhinaḥ
This you shall learn by prostrating yourself at the master's feet, questioning them, and serving them. The wise who have realized the truth will teach you wisdom.
Translated by Shri Purohit Swami
Know that the wise who have realized the truth will instruct thee in that knowledge through long prostration, supplication, and service.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
tat—the Truth; viddhi—try to learn; praṇipātena—by approaching a spiritual master; paripraśhnena—by humble inquiries; sevayā—by rendering service; upadekṣhyanti—can impart; te—unto you; jñānam—knowledge; jñāninaḥ—the enlightened; tattva-darśhinaḥ—those who have realized the Truth