Matsya Purana — The Greatness of Prayaga: Manasa Tirtha
एकरात्रोषितः स्नात्वा ऋणैः सर्वैः प्रमुच्यते स्वर्गलोकमवाप्नोति अनृणश्च सदा भवेत् //
ekarātroṣitaḥ snātvā ṛṇaiḥ sarvaiḥ pramucyate svargalokamavāpnoti anṛṇaśca sadā bhavet //
After staying for a single night and then bathing (at that sacred place), one is released from all debts; one attains the heavenly world and becomes ever free from indebtedness.
This verse does not discuss pralaya; it teaches tīrtha-mahātmyam—how a brief holy stay and sacred bathing yield merit, including release from ṛṇa (obligations) and attainment of Svarga.
It addresses ṛṇa—the moral and social obligations (to ancestors, gods, sages, and society) central to householder/royal dharma—stating that prescribed tīrtha residence and bathing can ritually mitigate such burdens and support a life of dharmic “freedom from indebtedness.”
The ritual point is tīrtha-vidhi: staying even one night at a sacred site and performing snāna is presented as a potent rite (snānaphala). No Vastu or temple-construction rule is stated in this specific verse.