Maitrayaniya Upanishad 6.4

6.4

mahimānamanūdyopāsyatvaṃ siddhamupamaharati tasmāditi | etat prāṇādityātmakaṃ tattvamajasramupāsīteti sambandhaḥ | datiśabda upāsanavidhyanuvādasamāptyarthaḥ | praṇavenopāsanavidhidrūḍhaye praṇavamāhātmyavādikāmṛdāharati eko'syeti | asya praṇavasya ekaḥ ślokarūpo mantraḥ sambodhayitā māhātmyaprakāśako vidyate ityevaṃ hyāha kaṭhaśrutirityarthaḥ | tameva ślokaṃ kiñcidakṣarabhedena paṭhati etaditi | etadevākṣaraṃ praṇavākhyaṃ puṇyaṃ puṇyapradaṃ puṇyakarmasu prayujyamānamityarthaḥ, etadevākṣaraṃ paraṃ parabrahmaprakāśakaṃ mokṣadamityarthaḥ | kiṃ bahunā etadevākṣaraṃ jñātvā mameṣṭadametadeva nānyaditi niścitya tatparaḥ san yo yadicchati abhyudayaṃ vā mokṣaṃ vā phalaṃ tasya tadbhavatyevetyarthaḥ |
punarapyupāsyasyātmano guṇāntaravidhānāyottaro'nuvākaḥ “athānyatrāpyuktaṃ 0 akṣaramiti” iti | asya prāṇādityātmana eṣā tanūstanuḥ svanavatī śabdavatī | sā ketyata āha yā omitīti oṅkārarūpā tanurudāttānudāttasvaritarūpatraisvaryeṇoccāryamāṇā svanavatītyarthaḥ | praṇavāvayaveṣvakārādiṣu ekaikaṃ trikaṃ trikamavayavaśro