One verse

Srimad Bhagavatam 5.16.2

5.16.2

तत्रापि प्रियव्रतरथचरणपरिखातै: सप्तभि: सप्त सिन्धव उपक्‍ल‍ृप्ता यत एतस्या: सप्तद्वीपविशेषविकल्पस्त्वया भगवन् खलु सूचित एतदेवाखिलमहं मानतो लक्षणतश्च सर्वं विजिज्ञासामि ॥ २ ॥

tatrapi priyavrata-ratha-carana-parikhataih saptabhih sapta sindhava upaklpta yata etasyah sapta-dvipa-visesa-vikalpas tvaya bhagavan khalu sucita etad evakhilam aham manato laksanatas ca sarvam vi-jijnasami.

tatra api
in that Bhu-mandala
priyavrata-ratha-carana-parikhataih
by the ditches made by the wheels of the chariot used by Priyavrata Maharaja while circumambulating Sumeru behind the sun
saptabhih
by the seven
sapta
seven
sindhavah
oceans
upaklptah
created
yatah
because of which
etasyah
of this Bhu-mandala
sapta-dvipa
of the seven islands
visesa-vikalpah
the mode of the construction
tvaya
by you
bhagavan
O great saint
khalu
indeed
sucitah
described
etat
this
eva
certainly
akhilam
whole subject
aham
I
manatah
from the point of view of measurement
laksanatah
and from symptoms
ca
also
sarvam
everything
vijijnasami
wish to know

My dear Lord, the rolling wheels of Maharaja Priyavrata’s chariot created seven ditches, in which the seven oceans came into existence. Because of these seven oceans, Bhu-mandala is divided into seven islands. You have given a very general description of their measurement, names and characteristics. Now I wish to know of them in detail. Kindly fulfill my desire.