Matsya Purana — The Slaying of Jambha and the Rise of Tāraka: Divine Battle Formations
कन्दराणि व्यशीर्यन्त समन्तान्निर्झराणि तु ततः सा दानवेन्द्रस्य शैलमाया न्यवर्तत //
kandarāṇi vyaśīryanta samantānnirjharāṇi tu tataḥ sā dānavendrasya śailamāyā nyavartata //
Then the caverns split apart, and springs burst forth on every side; thereafter the demon-king’s mountain-illusion—the rock-like magical formation—came to an end.
It uses dissolution-like imagery—splitting caverns and sudden outflow of springs—to show the collapse of a powerful māyā (illusion), echoing Purāṇic motifs where seemingly solid forms disintegrate when divine or karmic force overturns them.
Indirectly, it underscores a core Purāṇic ethic: do not rely on deceptive power or appearances (māyā). For rulers and householders, steadiness in dharma is presented as more enduring than force, sorcery, or intimidation.
No direct Vāstu rule is stated, but the verse highlights natural features—caves, springs, mountain-watercourses—often treated in Vāstu and tīrtha contexts as potent landscape signs affecting site sanctity, stability, and auspiciousness.