Matsya Purana — Characteristics of Dvāpara and Kali Yugas
न प्रमाणे स्थितिर्ह्यस्ति पुष्ये घोरे युगे कलौ गर्भस्थो म्रियते कश्चिद् यौवनस्थस्तथा परः //
na pramāṇe sthitirhyasti puṣye ghore yuge kalau garbhastho mriyate kaścid yauvanasthastathā paraḥ //
In the dreadful Kali age, when Puṣya (once deemed auspicious) prevails, there is no stability in any measure or standard; some die even in the womb, and others likewise perish while still in youth.
This verse is not about cosmic Pralaya; it describes a moral and existential ‘decline’ in Kali-yuga—instability of norms and premature death (even in the womb or youth) as a symptom of the age.
By highlighting insecurity of life and breakdown of standards (pramāṇa), it implicitly urges kings to protect public welfare (health, order, justice) and householders to strengthen dharma through restraint, charity, and disciplined conduct amid Kali-yuga conditions.
No direct Vāstu/temple rule is stated; the ritual takeaway is that even traditionally auspicious timings (like Puṣya) may not guarantee stability in Kali-yuga, so emphasis shifts to inner discipline and dharmic intent rather than mere calendrical optimism.