Matsya Purana — Omens in Tripura and the Nārada–Maya Dialogue on Dharma
आगतं जलदाभासं समेताः सर्वदानवाः उत्तस्थुर्नारदं दृष्ट्वा अभिवादनवादिनः //
āgataṃ jaladābhāsaṃ sametāḥ sarvadānavāḥ uttasthurnāradaṃ dṛṣṭvā abhivādanavādinaḥ //
When they saw Nārada arrive, radiant like a mass of rain-clouds, all the assembled Dānavas rose and greeted him with words of reverence.
This verse does not discuss Pralaya; it depicts a narrative moment of Nārada’s arrival and the respectful reception offered by the assembled Dānavas.
It reflects the dharmic norm of honoring revered guests—especially sages—by rising, offering salutations, and speaking respectfully, a model applicable to royal and household conduct.
No Vāstu or temple-architecture rule is stated here; the ritual element is social-ritual etiquette (abhivādana), emphasizing respectful greeting as a formal act.