Caitanya-caritāmṛta 22.107
nitya-siddha kṛṣṇa-prema ‘sādhya’ kabhu naya śravaṇādi-śuddha-citte karaye udaya
[nitya-siddha krishna-prema ‘saadhya’ kabhu naya shravanaadi-shuddha-chitte karaye udaya]
Blended reading (Sanskrit + English inline)
nitya-siddha kṛṣṇa-prema ‘sādhya’ kabhu naya śravaṇādi-śuddha-citte karaye udaya
“Pure love for Kṛṣṇa is eternally established in the hearts of the living entities. It is not something to be gained from another source. When the heart is purified by hearing and chanting, this love naturally awakens.
My note
Source: vedabase.io