Matsya Purana — The Array of the Gods: Description of the Vaiṣṇava Host and the Lokapālas
सृजन्तः सर्पपतयस् तीव्रतोयमयं विषम् शरभूता दिवीन्द्राणां चेरुर्व्यात्तानना दिवि //
sṛjantaḥ sarpapatayas tīvratoyamayaṃ viṣam śarabhūtā divīndrāṇāṃ cerurvyāttānanā divi //
The lords of serpents, spewing a fierce, flood-like poison, became like śarabhas; with gaping mouths they roamed in the sky, assailing the rulers of heaven.
It uses pralaya-like imagery—poison described as a violent, flood-like torrent—yet the scene is primarily a celestial assault, not the cosmic dissolution itself.
Indirectly, it reinforces a Purāṇic ethic: uncontrolled destructive forces (here, venom as a metaphor for rage or hostility) threaten order; rulers are expected to restrain such chaos and protect the realm, just as the gods defend cosmic stability.
No explicit Vāstu or temple-ritual rule is stated; the verse is mythic-poetic, emphasizing omens and destructive potency rather than construction or consecration procedures.