Matsya Purana — Characteristics of Dvāpara and Kali Yugas
तस्मादायुर्बलं रूपं प्रहीयन्ते कलौ युगे दुःखेनाभिप्लुतानां च परमायुः शतं नृणाम् //
tasmādāyurbalaṃ rūpaṃ prahīyante kalau yuge duḥkhenābhiplutānāṃ ca paramāyuḥ śataṃ nṛṇām //
Therefore, in the Kali age, lifespan, strength, and bodily beauty steadily decline; and for people overwhelmed by suffering, the utmost span of life is only a hundred years.
It does not describe Pralaya directly; it explains a Kali-yuga symptom—human faculties (lifespan, strength, beauty) diminish due to pervasive suffering, indicating cosmic decline rather than cosmic dissolution.
By stating that people are afflicted and short-lived in Kali-yuga, it implies rulers and householders must prioritize dharma that reduces duḥkha—justice, charity, restraint, and protection—since human capacity is weakened and life is limited.
No Vāstu or temple-rule detail is stated here; the practical takeaway is ritual and discipline should be adapted to Kali-yuga limitations (reduced strength and lifespan), emphasizing accessible, sustaining practices.