Matsya Purana — Origin of Soma
विंशतिं च तथा सप्त दक्षः प्राचेतसो ददौ रूपलावण्यसंयुक्तास् तस्मै कन्याः सुवर्चसः //
viṃśatiṃ ca tathā sapta dakṣaḥ prācetaso dadau rūpalāvaṇyasaṃyuktās tasmai kanyāḥ suvarcasaḥ //
Dakṣa, the son of Pracetas, gave him twenty-seven daughters—radiant maidens endowed with beauty and grace.
It does not describe Pralaya directly; it contributes to creation-era ordering by detailing Prajāpati Dakṣa’s progeny and the structured continuation of lineages through marriage.
By highlighting sanctioned marriage alliances and progeny, it supports the householder ideal of sustaining social and cosmic order (dharma) through lawful family formation and lineage continuity.
No Vāstu or ritual procedure is specified in this verse; its primary significance is genealogical—establishing progeny networks that later frame ritual lineages and calendrical/mythic traditions.