Matsya Purana — Yadu Lineage
एवमादीनि पुत्राणां सहस्राणि निबोधत शतं शतसहस्राणां पुत्राणां तस्य धीमतः //
evamādīni putrāṇāṃ sahasrāṇi nibodhata śataṃ śatasahasrāṇāṃ putrāṇāṃ tasya dhīmataḥ //
“In this manner, understand” that he had sons by the thousands—indeed, by hundreds of thousands—such was the progeny of that wise one.
This verse does not discuss Pralaya; it emphasizes genealogical magnitude—extraordinary numbers of offspring—within a dynasty narrative.
Indirectly, it reflects the Purāṇic ideal of lineage continuity (vaṃśa-pravṛtti): sustaining family lines and social order through progeny, a concern of both royal and household life in Dharma-oriented literature.
No Vāstu, temple-building, or ritual procedure is specified here; the verse is a genealogical statement about the scale of descendants.