CC Madhya 20.295

virāṭ vyaṣṭi-jīvera teṅho antaryāmī
kṣīrodakaśāyī teṅho — pālana-kartā, svāmī
Word for word: 
virāṭ — the universal form; vyaṣṭi-jīvera — of all other living entities; teṅho — He; antaryāmī — the Supersoul; kṣīra-udaka-śāyī — Lord Viṣṇu who lies down on the ocean of milk; teṅho — He; pālana-kartā — the maintainer; svāmī — the master.
Translation: 
“Kṣīrodakaśāyī Viṣṇu is the universal form of the Lord and is the Supersoul within every living entity. He is known as Kṣīrodakaśāyī because He is the Lord who lies on the ocean of milk. He is the maintainer and master of the universe.