Chānd-Mül, 1879-842. This (the breath in the mouth) and that (the sun) are the same. This is hot and that is hot. This they call svara (sound), and that they call pratyasvara (reflected sound). Therefore let a man meditate on the udgitha (Om) as this and that (as breath and as sun).
Chānd-Śaṃ, 8th c. A.D.yadyapi sthānabhedātprāṇādityau bhinnāviva lakṣyete tathāpi na sa tattvabhedastayoḥ | katham-samāna u eva tulya eva prāṇaḥ savitrā guṇataḥ savitā ca prāṇena | yasmāduṣṇo ’yaṃ prāṇa uṣṇaścāsau savitā | kiñca svara itīmaṃ prāṇamācakṣate kathayanti tathā svara iti;pratyāsvara iti cāmuṃ savitāram | yasmātprāṇaḥ svaratyeva na punarmṛtaḥ pratyāgacchati | savitā tvastamitvā punarapyahanyahani pratyāgacchati | ataḥ pratyāsvaro ’smādguṇato nāmataśca samānāvitaretaraṃ prāṇādityau | ataḥ satattvābhedādetaṃ prāṇamimamamuṃ cā’dityamudgīthamupāsīta || 2 ||
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