CC Antya 1.148
nisyandena mudāṁ sudhā-madhurimāhaṅkāra-saṅkocanaḥ
premā sundari nanda-nandana-paro jāgarti yasyāntare
jñāyante sphuṭam asya vakra-madhurās tenaiva vikrāntayaḥ
pīḍābhiḥ — by the sufferings; nava — fresh; kāla-kūṭa — of poison; kaṭutā — of the severity; garvasya — of pride; nirvāsanaḥ — banishment; nisyandena — by pouring down; mudām — happiness; sudhā — of nectar; madhurimā — of the sweetness; ahaṅkāra — the pride; saṅkocanaḥ — minimizing; premā — love; sundari — beautiful friend; nanda-nandana-paraḥ — fixed upon the son of Mahārāja Nanda; jāgarti — develops; yasya — of whom; antare — in the heart; jñāyante — are perceived; sphuṭam — explicitly; asya — of that; vakra — crooked; madhurāḥ — and sweet; tena — by him; eva — alone; vikrāntayaḥ — the influences.
“ ‘My dear beautiful friend, if one develops love of Godhead, love of Kṛṣṇa, the son of Nanda Mahārāja, all the bitter and sweet influences of this love will manifest in one’s heart. Such love of Godhead acts in two ways. The poisonous effects of love of Godhead defeat the severe and fresh poison of the serpent. Yet there is simultaneously transcendental bliss, which pours down and defeats the poisonous effects of a snake, as well as the happiness derived from pouring nectar on one’s head. It is perceived as doubly effective, simultaneously poisonous and nectarean.’ ”
This verse is from the Vidagdha-mādhava (2.18). It also appears in the Madhya-līlā (chapter two, verse 52). It is spoken by Paurṇamāsī.