Matsya Purana — Prayaga Mahatmya Begins: Yudhishthira’s Remorse
*मार्कण्डेय उवाच शृणु राजन्महाबाहो सर्वपातकनाशनम् प्रयागगमनं श्रेष्ठं नराणां पुण्यकर्मणाम् //
*mārkaṇḍeya uvāca śṛṇu rājanmahābāho sarvapātakanāśanam prayāgagamanaṃ śreṣṭhaṃ narāṇāṃ puṇyakarmaṇām //
Mārkaṇḍeya said: Listen, O king of mighty arms—going to Prayāga is the foremost act, the destroyer of all sins, for men devoted to meritorious deeds.
This verse does not discuss pralaya; it focuses on tirtha-mahātmya, declaring Prayāga pilgrimage as a powerful means of removing sin.
Addressed to a king, it frames pilgrimage to Prayāga as a premier dharmic practice—an exemplary act a ruler (and householders) may undertake to cultivate merit and moral purification.
No vastu or temple-architecture rule is stated; the ritual takeaway is the religious efficacy of prayāga-gamana (pilgrimage to Prayāga) as ‘sarva-pātaka-nāśana’ (sin-destroying).