Matsya Purana — Glory of Tīrtha-Śrāddha: Best Times
वटेश्वरस्तु भगवान् माधवेन समन्वितः योगनिद्राशयस्तद्वत् सदा वसति केशवः //
vaṭeśvarastu bhagavān mādhavena samanvitaḥ yoganidrāśayastadvat sadā vasati keśavaḥ //
At Vaṭeśvara the Blessed Lord abides, accompanied by Mādhava; likewise, in Yogānidrāśaya Keśava ever dwells.
It does not describe pralaya directly; instead, it emphasizes Vishnu’s continual presence (“sadā vasati”) in specific holy places, a devotional counterpoint to cosmic change.
By naming kṣetras where the Lord ‘dwells,’ it supports the Purāṇic ethic of tirtha-yātrā, temple worship, and dharmic patronage—duties often urged for kings and householders to sustain public religion and personal merit.
Ritually, it functions as a kṣetra-identification verse: it guides worship by associating a site with a particular Vishnu-name/form (Mādhava, Keśava). Architecturally, it implies the legitimacy of establishing/maintaining shrines at these named sacred locales.