Matsya Purana — Characteristics of Dvāpara and Kali Yugas
द्वापरे सर्वभूतानां कालः क्लेशपरः स्मृतः लोभो ऽधृतिर्वणिग्युद्धं तत्त्वानामविनिश्चयः //
dvāpare sarvabhūtānāṃ kālaḥ kleśaparaḥ smṛtaḥ lobho 'dhṛtirvaṇigyuddhaṃ tattvānāmaviniścayaḥ //
In the Dvāpara age, time is remembered as hardship-laden for all beings: greed prevails, steadfastness declines, trade turns into conflict, and certainty regarding true principles is lost.
This verse does not describe Pralaya directly; it outlines the moral and social condition of the Dvāpara Yuga—time itself becoming a source of affliction, leading to disorder and confusion about truth.
By highlighting greed, instability, and conflict in trade, it implies that rulers and householders must restrain lobha (greed), uphold fairness in commerce, and cultivate dhṛti (steadfastness) and clarity of tattva to prevent social fracture.
No direct Vāstu or ritual rule appears in this verse; its practical takeaway is ethical—without steadiness and truth-discernment, even sacred and civic works (including temple and town projects) become vulnerable to dispute and corruption.