SB 3.13.15

yad okaḥ sarva-bhūtānāṁ
 mahī magnā mahāmbhasi
asyā uddharaṇe yatno
 deva devyā vidhīyatām
Synonyms: 
yat — because; okaḥ — the dwelling place; sarva — for all; bhūtānām — living entities; mahī — the earth; magnā — merged; mahā-ambhasi — in the great water; asyāḥ — of this; uddharaṇe — in the lifting; yatnaḥ — attempt; deva — O master of the demigods; devyāḥ — of this earth; vidhīyatām — let it be done.
Translation: 
O master of the demigods, please attempt to lift the earth, which is merged in the great water, because it is the dwelling place for all the living entities. It can be done by your endeavor and by the mercy of the Lord.
Purport: 

The great water mentioned in this connection is the Garbhodaka Ocean, which fills half of the universe.