Matsya Purana — Characteristics of Dvāpara and Kali Yugas
ततः प्रजास्तु सम्भूय कन्दमूलमथो ऽखनन् फलमूलाशनाः सर्वे अनिकेतास्तथैव च //
tataḥ prajāstu sambhūya kandamūlamatho 'khanan phalamūlāśanāḥ sarve aniketāstathaiva ca //
Then the people gathered together and dug up bulbs and roots; all of them lived on fruits and roots, and likewise remained without fixed dwellings.
It depicts the immediate post-dissolution hardship: society is reduced to subsistence foraging—digging roots and eating fruits—showing a breakdown of settled life after a catastrophic upheaval.
By implying homelessness and scarcity, it highlights why kingship (protection, settlement, provisioning) and householder stability (food storage, shelter, agriculture) are central dharmic aims once order is restored.
No Vāstu or ritual procedure is prescribed directly; the key takeaway is the absence of dwellings (aniketāḥ), a contrast point that later supports the need for planned settlement and building norms.