Matsya Purana — Inquiry into Taraka’s Slaying and the Prelude to Guha
विरराम यदा नैवं वज्राङ्गमहिषी तदा शैलस्य दुष्टतां मत्वा शापं दातुं व्यवस्थिता //
virarāma yadā naivaṃ vajrāṅgamahiṣī tadā śailasya duṣṭatāṃ matvā śāpaṃ dātuṃ vyavasthitā //
When the queen of Vajrāṅga did not cease in this manner, then—judging Śaila to be wicked—she prepared herself to pronounce a curse.
This verse is not about Pralaya; it depicts a moral-narrative turning point where perceived wickedness leads to the decision to utter a śāpa (curse).
It highlights the ethical weight of speech and judgment: before acting (especially through powerful words like a curse), one must assess conduct (duṣṭatā) and act with deliberation—an indirect caution relevant to rulers and householders alike.
No Vāstu/temple-building or ritual procedure is stated in this verse; its focus is narrative ethics around śāpa and the consequences of wrongdoing.