Matsya Purana — Navagraha Sacrifice for Planetary Pacification and Prosperity
देवानामपि सर्वेषाम् उपांशु परमार्थवित् स्वेन स्वेनैव मन्त्रेण होतव्याः समिधः पृथक् //
devānāmapi sarveṣām upāṃśu paramārthavit svena svenaiva mantreṇa hotavyāḥ samidhaḥ pṛthak //
For all the deities as well, the knower of the highest truth should make the offerings in a low voice (upāṁśu); and the samidh-sticks are to be offered separately, each with its own respective mantra.
This verse does not address pralaya or cosmology; it focuses on correct ritual method—how offerings and mantras should be performed in homa.
It functions as practical dharma: a householder (and by extension a king maintaining public dharma) should perform fire-offerings with disciplined recitation—soft upāṁśu chanting—and make deity-specific offerings with the proper mantras.
Ritually, it prescribes two key rules: (1) mantras may be recited upāṁśu (softly) by a qualified practitioner, and (2) samidh offerings should be made separately for each deity, each accompanied by its own mantra—emphasizing precision in yajña procedure.