सप्तद्वीप-समुद्र-प्रमाणम्: प्लक्षादि-द्वीपवर्णनं, लोकालोक-सीमा, चन्द्र-समुद्र-वृद्धिक्षयः
एष द्वीपः समुद्रेण सुरोदेन समावृतः विस्ताराच् छाल्मलस्यैव समेन तु समन्ततः
eṣa dvīpaḥ samudreṇa surodena samāvṛtaḥ vistārāc chālmalasyaiva samena tu samantataḥ
This continent (dvīpa) is encircled by the ocean of surā; and in its full extent it is, on every side, equal in measure to Śālmala-dvīpa.
Sage Parāśara (speaking to Maitreya)
Speaker: Parasara
Topic: Ring-ocean and dvīpa measurements in Purāṇic cosmography
Teaching: Cosmological
Quality: authoritative
Cosmic Hierarchy: Dvipas
They mark concentric cosmic boundaries around each dvīpa, expressing a deliberate, ordered universe—an order ultimately grounded in Vishnu’s sovereign sustaining power.
Parāśara presents a systematic description: each dvīpa is surrounded by a distinct ocean and is compared by measure to adjacent dvīpas, creating a layered, intelligible cosmographic model.
Even when Vishnu is not named in the verse, the Purāṇic map functions as a theology of order: the stable measures and boundaries imply a cosmos sustained and governed by the Supreme Reality, Vishnu.