Matsya Purana — Prayaga Mahatmya Begins: Yudhishthira’s Remorse
अस्मान्संताप्य बहुशः सर्वे ते निधनं गताः वासुदेवं समाश्रित्य पञ्च शेषास्तु पाण्डवाः //
asmānsaṃtāpya bahuśaḥ sarve te nidhanaṃ gatāḥ vāsudevaṃ samāśritya pañca śeṣāstu pāṇḍavāḥ //
Having repeatedly caused us great anguish, all of them met their end; but the five Pāṇḍavas remained—taking refuge in Vāsudeva.
This verse does not discuss Pralaya; it emphasizes moral consequence and survival through devotion—those who caused suffering perish, while the righteous endure by taking refuge in Vasudeva.
It implies an ethical rule central to Purana-dharma: harming others leads to ruin, while protection of dharma and reliance on the Divine (Vasudeva) sustains one through crisis—an ideal for rulers and householders alike.
No Vastu or temple-architecture rule is stated here; the ritual takeaway is the primacy of śaraṇāgati (seeking refuge) in Vasudeva as a stabilizing religious principle.