Matsya Purana — Manvantaras
वैन्यः पृथुर्दिवोदासो ब्रह्मवान्गृत्सशौनकौ एकोनविंशतिर्ह्येते भृगवो मन्त्रकृत्तमाः //
vainyaḥ pṛthurdivodāso brahmavāngṛtsaśaunakau ekonaviṃśatirhyete bhṛgavo mantrakṛttamāḥ //
Vainya, Pṛthu, Divodāsa, Brahmavān, and Gṛtsa and Śaunaka—these, numbering nineteen in all, are the Bhṛgus, the foremost composers of mantras.
This verse does not describe pralaya; it preserves sacred memory by listing eminent Bhṛgu-lineage figures renowned as mantra-composers.
By honoring kings and sages as guardians of dharma and mantra-knowledge, the verse implies that rulers and householders should preserve Vedic tradition through patronage, study, and respectful remembrance of lineages.
No direct Vāstu or temple rule is stated; the ritual takeaway is the primacy of mantras and their authoritative transmitters (mantra-kṛt), foundational for sacrifices and consecrations.