Matsya Purana — Navagraha Sacrifice for Planetary Pacification and Prosperity
पूर्ववद्ग्रहदेवानाम् आवाहनविसर्जने होममन्त्रास्त एवोक्ताः खाने दाने तथैव च कुण्डमण्डपवेदीनां विशेषो ऽयं निबोध मे //
pūrvavadgrahadevānām āvāhanavisarjane homamantrāsta evoktāḥ khāne dāne tathaiva ca kuṇḍamaṇḍapavedīnāṃ viśeṣo 'yaṃ nibodha me //
As before, for the planetary deities (graha-devatās), the mantras for invocation (āvāhana) and dismissal (visarjana)—and the very same homa mantras—have already been stated; likewise for digging (khāna) and gifting (dāna) as well. Now learn from me this particular specification regarding the fire-pit (kuṇḍa), the pavilion (maṇḍapa), and the altar-platforms (vedīs).
This verse is not about Pralaya; it focuses on continuity of ritual mantras and introduces specific architectural/ritual specifications for the kunda, mandapa, and vedi used in rites for the planetary deities.
It frames proper performance of Graha-deva rites—using established mantras, correct procedural steps like sanctioned digging and gifting (dāna), and then following precise construction guidelines—reflecting a householder’s or ruler’s duty to uphold dharma through correctly executed public and domestic rituals.
It signals that while the mantras remain the same as previously taught, there are distinct, technical rules for the design/arrangement of the fire-pit (kuṇḍa), pavilion (maṇḍapa), and altar platforms (vedīs)—a key Vastu-linked transition from mantra-procedure to spatial specification.