Matsya Purana — The Greatness of Prayaga: Manasa Tirtha
गुणवान् रूपसम्पन्नो विद्वांश्च प्रियवाचकः भुक्त्वा तु विपुलान्भोगांस् तत्तीर्थं भजते पुनः //
guṇavān rūpasampanno vidvāṃśca priyavācakaḥ bhuktvā tu vipulānbhogāṃs tattīrthaṃ bhajate punaḥ //
Endowed with virtues and beauty—learned, and sweet of speech—having enjoyed abundant pleasures, one returns again to resort to that sacred tīrtha.
This verse does not describe pralaya; it emphasizes the recurring spiritual pull of a tīrtha—after enjoying the fruits of merit, one returns again to the sacred place for further worship and purification.
It supports the householder/kingly ethic that dharma and merit (tīrtha-sevā, worship, good conduct) yield refined qualities—virtue, learning, pleasing speech—and that one should repeatedly renew merit through continued pilgrimage and devotion rather than stopping after enjoying worldly results.
Ritually, it highlights tīrtha-bhajana—regular resorting to a sacred site for worship/bathing; no specific Vastu or temple-construction rule is stated, but it implies the ongoing importance of maintaining and frequenting sacred pilgrimage centers.