Matsya Purana — The Rite of the Jaggery-Cow
इह लोके च सौभाग्यम् आयुरारोग्यमेव च वैष्णवं पुरमाप्नोति मरणे च स्मरन्हरिम् //
iha loke ca saubhāgyam āyurārogyameva ca vaiṣṇavaṃ puramāpnoti maraṇe ca smaranharim //
In this very world one gains good fortune, long life, and health; and by remembering Hari at the time of death, one reaches the city— the abode—of Viṣṇu.
It does not discuss pralaya directly; it focuses on personal spiritual destiny—worldly welfare now and reaching Viṣṇu’s abode through remembrance of Hari at death.
It supports the Purāṇic householder ethic: pursue righteous life that yields wellbeing (saubhāgya, āyuḥ, ārogya) while cultivating steady devotion so that the mind rests on Hari at life’s end.
No Vāstu or temple-building rule is stated; the ritual takeaway is the soteriological emphasis on smaraṇa (remembrance) of Hari—especially at the moment of death—as a means to attain Viṣṇu’s divine abode.