CC Madhya 23.32

nāma-gāne sadā ruci, laya kṛṣṇa-nāma
Word for word: 
nāma-gāne — in chanting the holy names; sadā — constantly; ruci — taste, relish; laya — takes; kṛṣṇa-nāma — the Hare Kṛṣṇa mantra.
Translation: 
“Due to having great relish for the holy name, one is inclined to chant the Hare Kṛṣṇa mahā-mantra constantly.