Chāndogya Upaniṣad 4.9

4.9.1

prāpa hācaryakulam \
tam ācaryo 'bhyuvāda satyakāma3 iti \
bhagava iti ha pratiśuśrāva \\409.1\

1. Then he reached the teacher’s house. The teacher spoke to him, saying: ‘Satyakāma!’ ‘Sir!’ he replied.

4.9.2

brahmavid iva vai somya bhāsi \
ko nu tvānuśaśāsa iti \
anye manuṣyebhya iti ha pratijajñe \
bhagavāṃs tv eva me kāme brūyāt \\409.2\

2. ‘Verily, my dear, you shine like a Brahma-knower. Who, pray, has instructed you?’ ‘Others than men,’ he acknowledged. ‘But do you yourself please speak to me; for I have heard from those who are like you, Sir, that the knowledge which has been learned from a teacher best helps one to attain his end.’ To him he then declared it. In it then nothing whatsoever was omitted—yea, nothing was omitted.

4.9.3

śrutaṃ hy eva me bhagavaddṛśebhya ācāryād dhaiva vidyā viditā sādhiṣṭhaṃ prāpatīti \
tasmai ha etad eva uvāca \
atra ha na kiṃcana vīyāyeti vīyāyeti \\409.3\