Matsya Purana — War of Devas and Dānavas: Yama and Kubera Defeated; Kālanemi’s Māyā and the A...
स तु प्रासप्रहारेण मूर्छितो न्यपतद्भुवि ग्रसनं पतितं दृष्ट्वा जम्भो भीमपराक्रमः //
sa tu prāsaprahāreṇa mūrchito nyapatadbhuvi grasanaṃ patitaṃ dṛṣṭvā jambho bhīmaparākramaḥ //
Struck by the blow of a spear, he fainted and fell to the ground. Seeing Grasana lying fallen, Jambha—of dreadful prowess—(reacted in fury/resolve).
This verse does not address pralaya or cosmology; it depicts a battlefield moment where a warrior is felled by a spear and Jambha reacts upon seeing Grasana fallen.
Indirectly, it reflects the Purāṇic theme of kṣātra-dharma (martial duty): courage, vigilance, and response to the fall of allies—values later mirrored in royal ethics, though no explicit rule for kings/householders is stated here.
No Vāstu, temple-building, iconography, or ritual procedure is mentioned; the technical term here is prāsa (spear), relevant to martial description rather than ritual architecture.