upakosalo ha vai kāmalāyanaḥ satyakāme jābāle brahmacāryam uvāsa | tasya ha dvādaśa vārṣāny agnīn paricacāra | sa ha smānyān antevāsinaḥ samāvartayaṃs taṃ ha smaiva na samāvartayati
Upakosala Kâmalâyana dwelt as a Brahmakârin (religious student) in the house of Satyakâma Gâbâla. He tended his fires for twelve years. But the teacher, though he allowed other pupils (after they had learnt the sacred books) to depart to their own homes, did not allow Upakosala to depart.
Then his wife said to him: 'This student, who is quite exhausted (with austerities), has carefully tended your fires. Let not the fires themselves blame you, but teach him.' The teacher, however, went away on a journey without having taught him.
स ह व्याधिना अनशितुं दध्रे । तम् आचार्यजाया उवाच ब्रह्मचारिन्न् अशान । किं नु न अश्नासि इति । स ह उवाच बहव इमे ऽस्मिन् पुरुषे कामा नानात्यायाः । व्याधीभीः प्रतिपूर्णो ऽस्मि । न अस्।इष्यामि इति
sa ha vyādhinā anaśituṃ dadhre | tam ācāryajāyā uvāca brahmacārinn aśāna | kiṃ nu na aśnāsi iti | sa ha uvāca bahava ime 'smin puruṣe kāmā nānātyāyāḥ | vyādhībhīḥ pratipūrṇo 'smi | na as/iṣyāmi iti
The student from sorrow was not able to eat. Then the wife of the teacher said to him: 'Student, eat! Why do you not eat?' He said: 'There are many desires in this man here, which lose themselves in different directions. I am full of sorrows, and shall take no food.'
स होवाच । विजानाम्य् अहं यत् प्राणो ब्रह्म । कं च तु खं च न विजानामीति । ते होचुः । यद् वाव कं तद् एव खम् । यद् एव खं तद् एव कम् इति । प्राणं च हास्मै तद् आकाशं चोचुः
sa hovāca | vijānāmy ahaṃ yat prāṇo brahma | kaṃ ca tu khaṃ ca na vijānāmīti | te hocuḥ | yad vāva kaṃ tad eva kham | yad eva khaṃ tad eva kam iti | prāṇaṃ ca hāsmai tad ākāśaṃ cocuḥ
'Breath is Brahman, Ka (pleasure) is Brahman, Kha (ether) is Brahman.' He said: 'I understand that breath is Brahman, but I do not understand Ka or Kha.' They said: 'What is Ka is Kha, what is Kha is Ka.' They therefore taught him Brahman as breath, and as the ether (in the heart).