Ädyo 'vatÄraḥ puruá¹£aḥ parasya
kÄlaḥ svabhÄvaḥ sad-asan manaÅ› ca
dravyaá¹ vikÄro guṇa indriyÄṇi
virÄá¹ svarÄá¹ sthÄsnu cariṣṇu bhÅ«mnaḥ
Ädyaḥ avatÄraḥ - the original incarnation; puruá¹£aḥ - KÄraṇÄbdhiÅ›ÄyÄ« Viṣṇu; parasya - of the Supreme Lord; kÄlaḥ - time; svabhÄvaḥ - space; sat-asat - cause and effect; manaḥ ca - as well as the mind; dravyam - the five elements; vikÄraḥ - transformation or the false ego; guṇaḥ - modes of nature; indriyÄṇi - senses; virÄá¹ - the universal form; svarÄá¹ - GarbhodakaÅ›ÄyÄ« Viṣṇu; sthÄsnu - immovable; cariṣṇu - movable; bhÅ«mnaḥ - of the Supreme Personality of Godhead.
This is a quotation from ÅšrÄ«mad-BhÄgavatam (2.6.42). For an explanation, refer to Ä€di-lÄ«lÄ, chapter five, verse 83.