सप्तद्वीप-समुद्र-प्रमाणम्: प्लक्षादि-द्वीपवर्णनं, लोकालोक-सीमा, चन्द्र-समुद्र-वृद्धिक्षयः
क्षीराब्धिः सर्वतो ब्रह्मन् पुष्कराख्येन वेष्टितः द्वीपेन शाकद्वीपात् तु द्विगुणेन समन्ततः
kṣīrābdhiḥ sarvato brahman puṣkarākhyena veṣṭitaḥ dvīpena śākadvīpāt tu dviguṇena samantataḥ
ஓ பிராமணரே, க்ஷீராப்தி எல்லாத் திசைகளிலும் ‘புஷ்கர’ எனப்படும் தீவால் சூழப்பட்டுள்ளது; அது சாகத்வீபத்தின் இரட்டையளவாக விரிந்து சுற்றிவளைக்கிறது।
Sage Parāśara (speaking to Maitreya)
Here it functions as a major cosmic ocean in the ordered layout of the world, showing a measured, law-governed universe where continents and oceans encircle one another in fixed proportions.
He describes a concentric model: each dvīpa and its ocean surround the previous region, and the dimensions expand by a consistent rule—here, Puṣkara-dvīpa is said to be twice the extent of Śāka-dvīpa.
Even when Vishnu is not named in the verse, the Vishnu Purana frames such cosmic order as sustained by the Supreme Reality—Vishnu—whose sovereignty underlies the harmony, measure, and stability of creation.