Matsya Purana — Conclusion of the Prayaga Mahatmya: Kingship Restored
प्रयागमनुगच्छेद्वा वसते वापि यो नरः सर्वपापविशुद्धात्मा रुद्रलोकं स गच्छति //
prayāgamanugacchedvā vasate vāpi yo naraḥ sarvapāpaviśuddhātmā rudralokaṃ sa gacchati //
Whether a man merely proceeds toward Prayāga, or even resides there, his self becomes purified of all sins, and he attains Rudra’s world.
This verse is not about pralaya; it teaches tīrtha-mahātmya—Prayāga’s sanctifying power and the posthumous attainment of Rudraloka through pilgrimage or residence.
It supports the householder/kingly ideal of dharmic living through tīrtha-yātrā: undertaking pilgrimage (or maintaining a holy residence) as a purificatory discipline that complements daily duties and ethical conduct.
No specific Vāstu or temple-building rule is stated; the ritual takeaway is the tīrtha principle that even going toward or dwelling at Prayāga is credited as a powerful act of purification.