Chandogya Upanishad 5.11

prācīnaśāla aupamanyavaḥ satyayajñaḥ pauluṣir indradyumno bhāllaveyo janaḥ śārkarākṣyo buḍila āśvatarāśvis te haite mahāśālā mahāśrotriyāḥ sametya mīmāṃsāṃ cakruḥ ko na ātmā kiṃ brahmeti

Prâkînasâla Aupamanyava, Satyayagña Paulushi, Indradyumna Bhâllaveya, Gana Sârkarâkshya, and Budila Âsvatarasvi, these five great householders and great theologians came once together and held a discussion as to What is our Self, and what is Brahman.

te ha saṃpādayāṃcakruḥ uddālako vai bhagavanto 'yam āruṇiḥ saṃpratīmam ātmānaṃ vaiśvānaram adhyeti taṃ hantābhyāgacchāmeti taṃ hābhyājagmuḥ

They reflected and said: 'Sirs, there is that Uddâlaka Âruni, who knows at present that Self, called Vaisvânara. Well, let us go to him.' They went to him.

sa ha saṃpādayāṃcakāra prakṣyanti mām ime mahāśālā mahāśrotriyāḥ tebhyo na sarvam iva pratipatsye hantāham anyam abhyanuśāsānīti

But he reflected: 'Those great householders and great theologians will examine me, and I shall not be able to tell them all; therefore I shall recommend another teacher to them.'

tān hovāca aśvapatir vai bhagavanto 'yaṃ kaikeyaḥ saṃpratīmam ātmānaṃ vaiśvānaram adhyeti taṃ hantābhyāgacchāmeti taṃ hābhyājagmuḥ

He said to them: 'Sirs, Asvapati Kaikeya knows at present that Self, called Vaisvânara. Well, let us go to him.' They went to him.

tebhyo ha prāptebhyaḥ pṛthag arhāṇi kārayāṃcakāra sa ha prātaḥ saṃjihāna uvāca na me steno janapade na kadaryo na madyapaḥ nānāhitāgnir nāvidvān na svairī svairiṇī kutaḥ yakṣyamāṇo vai bhagavanto 'ham asmi yāvad ekaikasmā ṛtvije dhanaṃ dāsyāmi tāvad bhagavadbhyo dāsyāmi vasantu bhagavanta iti

When they arrived (the king) ordered proper presents to be made separately to each of them. And rising the next morning he said: 'In my kingdom there is no thief, no miser, no drunkard, no man without an altar in his house, no ignorant person, no adulterer, much less an adulteress. I am going to perform a sacrifice, Sirs, and as much wealth as I give to each Ritvig priest, I shall give to you, Sirs. Please to stay here.'

te hocuḥ yena haivārthena puruṣaś caret taṃ haiva vadet ātmānam evemaṃ vaiśvānaraṃ saṃpraty adhyeṣi tam eva no brūhīti

They replied: 'Every man ought to say for what purpose he comes. You know at present that Vaisvânara Self, tell us that.'

tān hovāca prātar vaḥ prativaktāsmīti te ha samitpāṇayaḥ pūrvāhṇe praticakramire tān hānupanīyaivaitad uvāca

He said: 'To-morrow I shall give you an answer.' Therefore on the next morning they approached him, carrying fuel in their hands (like students), and he, without first demanding any preparatory rites, said to them: