Matsya Purana — Yadu Lineage
प्रणवे ऋग्यजुःसाम्ने स्वाहाय च स्वधाय च वषट्कारात्मने चैव तुभ्यं मन्त्रात्मने नमः //
praṇave ṛgyajuḥsāmne svāhāya ca svadhāya ca vaṣaṭkārātmane caiva tubhyaṃ mantrātmane namaḥ //
Salutations to You who are the Pranava (Oṁ); to You who are the essence of the Ṛg, Yajus, and Sāman; to You who are present as the invocations svāhā and svadhā; and to You who are embodied as the sacrificial call vaṣaṭ—obeisance to You, the very Self of mantra.
Indirectly, it points to the Supreme as the Mantra-principle (Oṁ and the Vedas), implying that the cosmic order underlying creation and dissolution is grounded in sacred sound and Vedic revelation rather than a purely material cause.
It reinforces Vedic duty (yajña and daily recitation): a king or householder sustains dharma through offerings and Vedic observance—svāhā for deva-offerings and svadhā for ancestral rites—recognizing the Divine as present in the very formulas of ritual.
Ritually, it names the core liturgical utterances of sacrifice—svāhā, svadhā, and vaṣaṭ—showing that correct mantra-vāc (sacrificial speech) is central to yajña performance; the verse is primarily mantra/rite-focused rather than Vāstu-specific.