Matsya Purana — Origin of Soma
चमसाध्वर्यवस्तत्र विश्वे देवा दशैव तु त्रैलोक्यं दक्षिणा तेन ऋत्विग्भ्यः प्रतिपादितम् //
camasādhvaryavastatra viśve devā daśaiva tu trailokyaṃ dakṣiṇā tena ṛtvigbhyaḥ pratipāditam //
There, the Camasa and Adhvaryu priests were duly honoured, and the Viśvedevas—ten in number—were invoked; and by that rite the dakṣiṇā, symbolically equated with the three worlds, was properly presented to the officiating ṛtvij priests.
This verse is not about Pralaya; it focuses on yajña procedure—especially the proper honoring of priests and deities through dakṣiṇā, described with cosmic symbolism (trailokya).
It highlights the dharmic duty of a yajamāna (often a king or householder) to remunerate ṛtviks correctly; giving dakṣiṇā is treated as an essential completion of sacrifice, not an optional charity.
Ritually, it specifies priestly roles (Camasa, Adhvaryu, ṛtvij) and the invocation/recognition of the Viśvedevas (ten), emphasizing that dakṣiṇā—likened to the ‘three worlds’—must be formally presented to the officiants.