Matsya Purana — Soma
एते स्मृता देवकृत्याः सोमपाश्चोष्मपाश्च ये तांस्तेन तर्पयामास यावदासीत्पुरूरवाः //
ete smṛtā devakṛtyāḥ somapāścoṣmapāśca ye tāṃstena tarpayāmāsa yāvadāsītpurūravāḥ //
These are remembered as the “divine functionaries” (devakṛtya)—the Somapās and the Ūṣmapās; and Purūravas, for as long as he lived, continually satisfied them through that rite of offering (tarpana).
This verse does not discuss pralaya; it focuses on ritual continuity—how Purūravas maintained offerings (tarpana) to specific divine classes.
It presents a model of dharma: a ruler sustains cosmic order by regular sacrificial remembrance and offerings (tarpana) to recognized divine groups, implying disciplined, lifelong ritual responsibility.
The significance is ritual, not architectural: it highlights tarpana—acts of satisfaction/oblations—directed to Somapās and Ūṣmapās as part of prescribed devotional-sacrificial observances.