Manava Dharmashastra 3.175

3.175

triṇāciketākhyo vedavibhāgo'dhvaryūṇām-'pītodakājagdhatṛṇā' ityādiḥ | tadadhyayanasambandhāt puruṣo'tra triṇāciketa ucyate | anye ca triṇāciketamadhīyānānāṃ vratamāmnātaṃ-tat yena caritaṃ sa triṇāciketaḥ | atrāpi lakṣaṇayaiva puruṣa ucyate | na caivaṃ mantavyaṃ tāvanmātreṇa paṅktipāvanatvam, kiṃ tarhi, sati śrotriyatvādiguṇayoge'dhiko'yaṃ guṇo draṣṭavyaḥ paṃktipāvanahetutayā | pañcāgnividyā nāma chāndogyopaniṣadi vidyā''mnāyate, (5|

Medhātithi’s commentary (manubhāṣya):
‘Triṇāciketa’ is the name of a portion of the Yajurveda, beginning with the words ‘pītodakā jagdhatṛṇā; and the man is called ‘triṇāciketa’ by the circumstance of his having learnt that portion. Others, however, explain that there are certain observances prescribed for those who are learning the Tṛṇāciketa Mantras; and the person who has kept these observances is called ‘Triṇāciketa.’ Here also the term is applied to the man only figuratively.

It should not be thought that merely this (fact of having learnt a certain portion of the Veda) makes one a ‘Sanctifier of Company;’ what is meant is, that when the other qualifications of being learned in the Veda and the like are present, the circumstance here mentioned forms an additional qualification as indicating the character of being a ‘Sanctifier of Company.’

‘Five fires,’ ‘Pañcāgnividyā,’ is the name of a certain teaching occurring in the Chāndogya Upaniṣad (5.10.9), the reward whereof has been described in the words ‘stenohiraṇyasya, etc.’ The man is also so called by the circumstance of his having learnt the said teaching, as in the case of the previous word.