Matsya Purana — Prayaga Mahatmya: Trimurti Presence
उत्तरेण प्रतिष्ठानाच् छद्मना ब्रह्म तिष्ठति वेणीमाधवरूपी तु भगवांस्तत्र तिष्ठति //
uttareṇa pratiṣṭhānāc chadmanā brahma tiṣṭhati veṇīmādhavarūpī tu bhagavāṃstatra tiṣṭhati //
To the north of Pratiṣṭhāna, Brahmā abides in a concealed (incognito) manner; and there too the Blessed Lord dwells, taking the form known as Veṇī-Mādhava.
This verse is not about pralaya; it is a tīrtha-oriented statement identifying where Brahmā and the Lord (as Veṇī-Mādhava) are said to reside, emphasizing sacred presence in geography rather than cosmic dissolution.
Indirectly, it supports the Purāṇic ethic of dharma through pilgrimage and patronage: kings and householders are encouraged to honor such kṣetras (supporting worship, maintenance, and pilgrim welfare), thereby gaining merit and stabilizing social-religious order.
The verse implies a fixed sacred locus (north of Pratiṣṭhāna) associated with specific deities—useful for temple identification and ritual mapping: a shrine or worship-point for Brahmā and a Viṣṇu icon/form titled Veṇī-Mādhava would be ritually appropriate at that location.