Chandogya Upanishad 4.4

satyakāmo ha jābālo jabālāṃ mātaram āmantrayāṃcakre brahmacaryaṃ bhavati vivatsyāmi kiṃgotro nv aham asmīti

Satyakâma, the son of Gabâlâ, addressed his mother and said: 'I wish to become a Brahmakârin (religious student), mother. Of what family am I?'

sā hainam uvāca nāham etad veda tāta yadgotras tvam asi bahv aham carantī paricāriṇī yauvane tvām alabhe sāham etan na veda yadgotras tvam asi jabālā tu nāmāham asmi satyakāmo nāma tvam asi sa satyakāma eva jābālo bruvīthā iti

She said to him: 'I do not know, my child, of what family thou art. In my youth when I had to move about much as a servant (waiting on the guests in my father's house), I conceived thee. I do not know of what family thou art. I am Gabâlâ by name, thou art Satyakâma (Philalethes). Say that thou art Satyakâma Gabâlâ.'

sa ha hāridrumataṃ gautamam etyovāca brahmacaryaṃ bhagavati vatsyāmi upeyāṃ bhagavantam iti

He going to Gautama Hâridrumata said to him, 'I wish to become a Brahmakârin with you, Sir. May I come to you, Sir?'

taṃ hovāca kiṃgotro nu somyāsīti sa hovāca nāham etad veda bho yadgotro 'ham asmi apṛcchaṃ mātaram sā mā pratyabravīd bahv aham carantī paricāriṇī yauvane tvām alabhe sāham etan na veda yadgotras tvam asi jabālā tu nāmāham asmi satyakāmo nāma tvam asīti so 'haṃ satyakāmo jābālo 'smi bho iti

He said to him: 'Of what family are you, my friend?' He replied: 'I do not know, Sir, of what family I am. I asked my mother, and she answered: 'In my youth when I had to move about much as a servant, I conceived thee. I do not know of what family thou art. I am Gabâlâ by name, thou art Satyakâma,' I am therefore Satyakâma Gabâlâ, Sir.'

taṃ hovāca naitad abrahmaṇo vivaktum arhati samidhaṃ somyāhara upa tvā neṣye na satyād agā iti tam upanīya kṛśānām abalānāṃ catuḥśatā gā nirākṛtya uvācemāḥ somyānusaṃvrajeti tā abhiprasthāpayann uvāca nāsahasreṇāvarteyeti sa ha varṣagaṇaṃ provāsa tā yadā sahasraṃ saṃpeduḥ

He said to him: 'No one but a true Brâhmana would thus speak out. Go and fetch fuel, friend, I shall initiate you. You have not swerved from the truth. Having initiated him, he chose four hundred lean and weak cows, and said: 'Tend these, friend.' He drove them out and said to himself, 'I shall not return unless I bring back a thousand.' He dwelt a number of years (in the forest), and when the cows had become a thousand,