Matsya Purana — Account of the Manvantaras: Manus
सहः कनीयानेतेषाम् उदारः कीर्तिवर्धनः भावनास् तत्र देवाः स्युर् ऊर्जाः सप्तर्षयः स्मृताः //
sahaḥ kanīyāneteṣām udāraḥ kīrtivardhanaḥ bhāvanās tatra devāḥ syur ūrjāḥ saptarṣayaḥ smṛtāḥ //
Among these, Saha is the youngest; Udāra is the enhancer of fame. In that manvantara, the Bhāvanas are said to be the gods, and the Ūrjās are remembered as the Seven Sages (Saptarṣis).
It does not describe Pralaya directly; it catalogs cosmic administration in a cycle (manvantara) by naming groups of devas (Bhāvanas) and sages (Ūrjās as Saptarṣis), which is part of the Purāṇic framework that continues across creations and dissolutions.
Indirectly, it supports dharma by grounding social and royal order in a cosmic hierarchy: kings and householders are advised elsewhere to honor devas and sages through yajña, dāna, and hospitality—here the text identifies who those divine/sage groups are within the manvantara scheme.
No Vāstu or iconographic rule is stated in this verse; its ritual takeaway is classificatory—knowing the deva-groups and saptarṣi lineages helps contextualize mantras, invocations, and Purāṇic ritual recitations tied to specific cosmic cycles.