Matsya Purana — Procedure for Going to Prayaga and the Greatness of the Ganga
चतुर्वेदेषु यत्पुण्यं यत्पुण्यं सत्यवादिषु अहिंसायां तु यो धर्मो गमनादेव तत्फलम् //
caturvedeṣu yatpuṇyaṃ yatpuṇyaṃ satyavādiṣu ahiṃsāyāṃ tu yo dharmo gamanādeva tatphalam //
Whatever merit is found in the four Vedas, whatever merit belongs to the truthful, and whatever righteousness lies in non-violence (ahiṃsā)—one attains that very fruit merely by setting forth on the pilgrimage journey.
This verse does not address Pralaya directly; it emphasizes dharma and the extraordinary merit (puṇya) attributed to pilgrimage—placing it on par with Vedic merit, truthfulness, and non-violence.
It frames pilgrimage (tīrtha-yātrā) as a potent dharmic practice accessible to householders and rulers alike, complementing core virtues—satya (truth) and ahiṃsā (non-harm)—that are central to righteous governance and daily conduct.
No Vāstu or iconographic rule is stated here; the ritual takeaway is that the act of going on pilgrimage itself is presented as a powerful rite yielding merit comparable to major ethical and scriptural accomplishments.