Matsya Purana — Navagraha Sacrifice for Planetary Pacification and Prosperity
एषो उषा अपूर्व्या इत्य् अश्विनोर्मन्त्र उच्यते पूर्णाहुतिस्तु मूर्धानं दिव इत्यभिपातयेत् //
eṣo uṣā apūrvyā ity aśvinormantra ucyate pūrṇāhutistu mūrdhānaṃ diva ityabhipātayet //
“This is the wondrous Dawn”—this is declared to be the mantra of the Aśvins. But for the complete (final) oblation, one should cast it into the fire with the formula, “(O Agni,) the head of heaven.”
This verse is not about pralaya; it preserves a ritual detail—specific mantras used for invoking the Aśvins and for offering the final oblation (pūrṇāhuti) in a homa.
It supports the dharma of correct ritual performance: a householder (and a king who sponsors sacrifices) should use the proper mantras and procedures, especially at the concluding offering, to ensure the rite is complete and efficacious.
Ritual significance: it distinguishes an Aśvin-invocation mantra from the specific formula to be uttered during the pūrṇāhuti (final oblation), indicating precise mantra-application (mantra-viniyoga) in fire offerings.