तद्यद्रजतं सेयं पृथिवी यत्सुवर्णं सा द्यौर्यज्जरायु ते पर्वता यदुल्बं समेघो नीहारो या धमनयस्ता नद्यो यद्वास्तेयमुदकं स समुद्रः ॥ ३.१९.२ ॥
In plain words
The silver half is this earth, the golden half the sky. What was the outer membrane is the mountains; what was the inner membrane is the mist with the clouds; what were the veins are the rivers; and what was the fluid within is the ocean.