Matsya Purana — Genealogy from Budha to Purūravas and Yayāti; Raji’s war episode; the Paurava...
पुत्रत्वमगमत्तुष्टस् तस्येन्द्रः कर्मणा विभुः दत्त्वेन्द्राय तदा राज्यं जगाम तपसे रजिः //
putratvamagamattuṣṭas tasyendraḥ karmaṇā vibhuḥ dattvendrāya tadā rājyaṃ jagāma tapase rajiḥ //
Pleased by his deeds, the mighty Indra accepted him as a son. Then Raji, having handed over the kingship to Indra, departed to practice austerities.
This verse does not address Pralaya; it focuses on royal succession and the spiritual choice to renounce power for austerity.
It highlights a dharmic model where rightful authority can be transferred to a worthy ruler (Indra), while the former king (Raji) turns toward tapas—showing that governance and renunciation are both valid life-paths when aligned with duty and merit.
No Vastu/temple-architecture rule is stated here; the ritual-spiritual emphasis is on tapas (austerity) as a sanctioned religious pursuit after relinquishing sovereignty.