CC Madhya 20.348

pūrvavat likhi yabe guṇāvatāra-gaṇa
asaṅkhya saṅkhyā tāṅra, nā haya gaṇana
Word for word: 
pūrva-vat — as previously; likhi — I write; yabe — when; guṇa-avatāra-gaṇa — incarnations of the material modes of nature; asaṅkhya — innumerable; saṅkhyā — counting; tāṅra — of them; nā haya gaṇana — not actually countable.
Translation: 
“As stated before when I described the incarnations of the material modes [guṇa-avatāras], one should consider that these incarnations also are unlimited and that no one can count them.