CC Madhya 21.39
ei tina — sthūla-sūkṣma-sarva-antaryāmī
“Mahā-Viṣṇu, Padmanābha and Kṣīrodakaśāyī Viṣṇu are the Supersouls of all subtle and gross existences.
Lord Mahā-Viṣṇu is known as Kāraṇodakaśāyī Viṣṇu, the Supersoul of everything. Garbhodakaśāyī Viṣṇu, from whose lotus navel Brahmā was created, is also called Hiraṇyagarbha and is the total Supersoul and the subtle Supersoul. Kṣīrodakaśāyī Viṣṇu is the universal form and the gross Supersoul.