CC Madhya 20.278

iṅho mahat-sraṣṭā puruṣa — ‘mahā-viṣṇu’ nāma
ananta brahmāṇḍa tāṅra loma-kūpe dhāma
Word for word: 
iṅho — He; mahat-sraṣṭā — the creator of the mahat-tattva, or total material energy; puruṣa — the person; mahā-viṣṇu nāma — called Lord Mahā-Viṣṇu; ananta — unlimited; brahmāṇḍa — universes; tāṅra — of His body; loma-kūpe — within the hair holes; dhāma — are situated.
Translation: 
“The first form of Lord Viṣṇu is called Mahā-Viṣṇu. He is the original creator of the total material energy. The innumerable universes emanate from the pores of His body.