Matsya Purana — War of Devas and Dānavas: Yama and Kubera Defeated; Kālanemi’s Māyā and the A...
ततः खड्गेन च शिरश् छेत्तुमैच्छदमर्षणः तस्मिंस्तदन्तरे देवो वरुणो ऽपांपतिर्द्रुतम् //
tataḥ khaḍgena ca śiraś chettumaicchadamarṣaṇaḥ tasmiṃstadantare devo varuṇo 'pāṃpatirdrutam //
Then, in a surge of wrath, he sought to sever the head with his sword; but in that very interval, the god Varuṇa—the lord of the waters—swiftly intervened.
It does not describe pralaya directly; it highlights Varuṇa’s role as apāṃ-pati (lord of waters), a deity often associated with cosmic order and the regulation of waters.
It underscores restraint and the prevention of rash violence: even when anger rises, dharma favors timely intervention, de-escalation, and protection from unjust killing.
No Vāstu or temple-architecture rule is stated; the ritual takeaway is theological—Varuṇa’s swift protective presence, relevant to water-related rites and invocations of apāṃ-pati.