Matsya Purana — Agastya’s Origin
वसिष्ठो ऽप्यभवत्तस्मिञ् जलकुम्भे च पूर्ववत् ततः श्वेतश्चतुर्बाहुः साक्षसूत्रकमण्डलुः अगस्त्य इति शान्तात्मा बभूव ऋषिसत्तमः //
vasiṣṭho 'pyabhavattasmiñ jalakumbhe ca pūrvavat tataḥ śvetaścaturbāhuḥ sākṣasūtrakamaṇḍaluḥ agastya iti śāntātmā babhūva ṛṣisattamaḥ //
And Vasiṣṭha too came to be in that water-jar, just as before. Then there manifested a fair-complexioned, four-armed one, bearing the sacred thread and the ascetic’s water-pot; serene in spirit, he became the foremost of sages, known as Agastya.
It does not describe Pralaya directly; instead, it focuses on extraordinary manifestations of sages, emphasizing divine or wondrous origins and the continuity of rishi lineages across cosmic cycles.
Indirectly, it supports the Purāṇic ethic that kings and householders should honor and protect sages like Vasiṣṭha and Agastya, whose spiritual authority (śānti, tapas, and dharma) guides society.
Ritually, the verse highlights ascetic insignia—yajñopavīta (sacred thread) and kamaṇḍalu—signifying Vedic discipline and purity; it does not provide specific Matsya Purana Vastu Shastra tips in this line.