Matsya Purana — The Procedure and Merit of the Śubha-Saptamī Vrata
अप्सरोगणगन्धर्वैः पूज्यमानः सुरालये वसेद्गणाधिपो भूत्वा यावदाभूतसंप्लवम् कल्पादाववतीर्णस्तु सप्तद्वीपाधिपो भवेत् //
apsarogaṇagandharvaiḥ pūjyamānaḥ surālaye vasedgaṇādhipo bhūtvā yāvadābhūtasaṃplavam kalpādāvavatīrṇastu saptadvīpādhipo bhavet //
Honoured by hosts of Apsarases and Gandharvas, he dwells in the abode of the gods; becoming a chief of the Gaṇas, he remains there until the cosmic dissolution. Then, descending again at the beginning of a new kalpa, he becomes a sovereign ruler over the seven continents (saptadvīpas).
It frames pralaya as a cosmic endpoint up to which meritorious beings can remain in Svarga; after dissolution, existence resumes at the start of the next kalpa with renewed embodiment and worldly sovereignty.
It presents an ethical incentive model typical of the Purāṇas: dharmic worship and right conduct yield heavenly honor and, later, legitimate kingship—suggesting that righteous life supports both spiritual ascent and orderly governance.
No explicit Vāstu or temple-rule detail appears; the ritual takeaway is the phala (reward) doctrine—proper worship leads to divine honor in Svarga and auspicious rebirth in a high, world-ordering role.