āpane puruṣa--viśvera 'nimitta'-kāraṇa
advaita-rūpe 'upādāna' hana nārāyaṇa
āpane—personally; puruṣa—Lord Viṣṇu; viśvera—of the entire material world; nimitta kāraṇa—the original cause; advaita-rūpe—in the form of Advaita; upādāna—the material cause; hana—becomes; nārāyaṇa—Lord Nārāyaṇa.
Lord Viṣṇu Himself is the efficient [nimitta] cause of the material world, and Nārāyaṇa in the form of Śrī Advaita is the material cause [upādāna].
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