Matsya Purana — Cosmography of Jambūdvīpa: Varṣas
सप्त वर्षाणि वक्ष्यामि जम्बूद्वीपं यथाविधम् विस्तरं मण्डलं यच्च योजनैस्तान्निबोधत //
sapta varṣāṇi vakṣyāmi jambūdvīpaṃ yathāvidham vistaraṃ maṇḍalaṃ yacca yojanaistānnibodhata //
I shall now describe, in due order, Jambūdvīpa with its seven regions (varṣas)—its breadth, its circular expanse, and its measurements in yojanas; listen and understand.
This verse is not describing Pralaya directly; it marks a transition into cosmography, where the Purana maps the ordered structure of the world (Jambūdvīpa) using traditional divisions and measurements.
Indirectly, it supports dharmic governance and ritual life by grounding them in sacred geography—pilgrimage networks, territorial understanding, and the cosmological order that kings are expected to protect and householders honor through rites.
The key technical cue is measurement (yojana) and mandala (circular layout), which parallels how ritual spaces and temple plans use precise, ordered dimensions; the verse frames the world itself as a measured ‘mandala’.