Matsya Purana — Soma
भिन्ने देहे दुरापन्नाः प्रेतभूता यमक्षये स्वकर्माण्यनुशोचन्तो यातनास्थानमागताः //
bhinne dehe durāpannāḥ pretabhūtā yamakṣaye svakarmāṇyanuśocanto yātanāsthānamāgatāḥ //
When the body is broken (by death), those who have fallen into a wretched state become pretas in Yama’s domain; grieving over their own deeds, they arrive at the place of torment.
This verse is not about cosmic pralaya; it describes an individual post-death transition—after the body perishes, the jīva may enter a preta condition and face karmic consequences in Yama’s realm.
It underscores karmic accountability: rulers and householders must uphold dharma—truthfulness, non-injury, charity, and restraint—because one’s own actions become the cause of grief and suffering after death in Yama’s domain.
No Vāstu or temple rule is stated here; the ritual takeaway is ethical—perform dharmic rites and right conduct to avoid becoming a preta and reaching yātanā-sthāna.