Matsya Purana — Manvantaras
उतथ्यो वामदेवश्च अगस्त्यः कौशिकस्तथा कर्दमो वालखिल्याश्च विश्रवाः शक्तिवर्धनः //
utathyo vāmadevaśca agastyaḥ kauśikastathā kardamo vālakhilyāśca viśravāḥ śaktivardhanaḥ //
Utathya, Vāmadeva, Agastya, and likewise Kauśika; Kardama; the Vālakhilyas; Viśravā; and Śaktivardhana—these revered sages are (here) enumerated.
This verse does not describe pralaya; it functions as a catalogue of renowned ṛṣis, supporting the Purana’s preservation of sacred lineages and authoritative transmitters of tradition.
By naming exemplary sages, the text implicitly upholds the ideal that kings and householders should honor ṛṣis, support learning and austerity, and preserve dharma through patronage of Vedic-Puranic tradition.
No direct Vāstu or iconographic rule is stated here; the ritual takeaway is reverence for rishi-authorities—figures often invoked in rites, recitations, and lineage-based transmissions of mantras and observances.