Matsya Purana — The Gods Seek Śiva’s Refuge: The Cosmic Chariot Prepared for the Burning of T...
ओंकारप्रभवास्ता वा मन्त्रयज्ञक्रतुक्रियाः उपद्रवाः प्रतीकाराः पशुबन्धेष्टयस्तथा //
oṃkāraprabhavāstā vā mantrayajñakratukriyāḥ upadravāḥ pratīkārāḥ paśubandheṣṭayastathā //
All these rites indeed arise from the syllable Oṃ—namely, mantra-observances, sacrificial acts and śrauta ceremonies; also rites concerning afflictions and their counter-remedies, as well as animal offerings and iṣṭi-sacrifices.
It does not describe Pralaya directly; it presents a cosmogonic principle of sacred sound—Oṃ—as the source from which ritual order (mantra and yajña systems) proceeds.
It frames dharmic life around regulated rites: a householder sustains society through yajñas and iṣṭis, while a king supports public ritual order and employs prescribed remedial rites (pratīkāra) to address communal disturbances (upadrava).
The ritual significance is explicit: all sacrificial procedures—mantras, śrauta acts (kratu), iṣṭis, and even expiatory/appeasement measures—are grounded in Oṃ, underscoring Oṃ as the foundational invocation in formal rites.