CC Madhya 11.11
strīṇāṁ viṣayiṇām api
yathāher manasaḥ kṣobhas
tathā tasyākṛter api
“ ‘Just as one is immediately frightened upon seeing a live serpent or even the form of a serpent, one endeavoring for self-realization should similarly fear a materialistic person and a woman. Indeed, he should not even glance at their bodily features.’
This is a quotation from Śrī Caitanya-candrodaya-nāṭaka (8.24).