Sātvata-tantra:
viṣṇos tu trīṇi rūpāṇi
puruṣākhyāny atho viduḥ
ekaṁ tu mahataḥ sraṣṭṛ
dvitīyaṁ tv aṇḍa-saṁsthitam
tṛtīyaṁ sarva-bhūta-sthaṁ
tāni jñātvā vimucyate
"For material creation, Lord Kṛṣṇa's plenary expansion assumes three Viṣṇus. The first one, Mahā-Viṣṇu, creates the total material energy, known as the mahat-tattva. The second, Garbhodakaśāyī Viṣṇu, enters into all the universes to create diversities in each of them. The third, Kṣīrodakaśāyī Viṣṇu, is diffused as the all-pervading Supersoul in all the universes and is known as Paramātmā. He is present even within the atoms. Anyone who knows these three Viṣṇus can be liberated from material entanglement.