Matsya Purana — Inquiry into Taraka’s Slaying and the Prelude to Guha
सा तु लब्धवरा देवी जगाम तपसे वनम् दश वर्षसहस्राणि सा तपो घोरमाचरत् //
sā tu labdhavarā devī jagāma tapase vanam daśa varṣasahasrāṇi sā tapo ghoramācarat //
That goddess, having obtained the boon she desired, went to the forest to undertake austerities; for ten thousand years she practiced a fierce and rigorous penance.
This verse does not discuss Pralaya directly; it highlights tapas as a source of transformative spiritual power in Purāṇic narratives.
It models disciplined vow-keeping and sustained effort; for a householder or king, the parallel is steadfast observance of dharma—regular vows, restraint, and long-term commitment to righteous aims.
No Vāstu or temple-building rule is stated here; the ritual takeaway is the centrality of tapas (austerity) as a recognized means to attain siddhi/boons in the Matsya Purana’s religious framework.