Matsya Purana — The Greatness of Prayaga and Allied Tirthas
एवं ज्ञानं च योगश्च तीर्थं चैव युधिष्ठिर बहुक्लेशेन युज्यन्ते तेन यान्ति परां गतिम् त्रिकालं जायते ज्ञानं स्वर्गलोकं गमिष्यति //
evaṃ jñānaṃ ca yogaśca tīrthaṃ caiva yudhiṣṭhira bahukleśena yujyante tena yānti parāṃ gatim trikālaṃ jāyate jñānaṃ svargalokaṃ gamiṣyati //
Thus, O Yudhiṣṭhira, knowledge, yoga, and pilgrimage to the tīrtha are attained only through great exertion; by them one reaches the supreme state. When knowledge ripens through the three times (past, present, and future—or through sustained practice at the three daily periods), one will go to the world of heaven.
This verse does not describe pralaya; it focuses on individual spiritual ascent—how effortful practice of jñāna, yoga, and tīrtha leads to a higher destiny.
It frames dharmic life as disciplined effort: a king or householder should support pilgrimage, cultivate yogic restraint, and seek true knowledge—because these are difficult yet elevating practices that lead to the highest welfare.
The ritual takeaway is tīrtha (pilgrimage) as a meritorious practice; no direct Vāstu or temple-building rule appears, but it supports the broader Purāṇic emphasis on sacred places and their rites.