Matsya Purana — Solar Dynasty Prelude: Vivasvān–Saṃjñā–Chāyā
वडबारूपम् आस्थाय मत्सकाशम् इहागता निवारिता मया सा नु त्वया चैव दिवाकर //
vaḍabārūpam āsthāya matsakāśam ihāgatā nivāritā mayā sā nu tvayā caiva divākara //
Assuming the form of Vaḍabā—the mare-faced submarine fire—she came here into the presence of Matsya. I restrained her; yet, O Divākara (Sun), was she restrained by you as well?
It alludes to a destructive cosmic force—Vaḍabā, the submarine fire—being restrained, implying that pralaya involves multiple catastrophic energies (fire as well as flood) that must be checked to preserve cosmic order.
By analogy, it emphasizes restraint (nivarana) of harmful forces: just as divine powers curb cosmic threats, a king/householder is expected to curb disorder—protecting society, regulating passions, and preventing calamities through disciplined governance and dharmic conduct.
No direct Vāstu or temple-building rule is stated; however, the verse’s theme of 'restraining destructive fire' aligns with ritual concerns for fire-control and purity in yajña contexts, a background principle often echoed in Purāṇic ritual manuals.