CC Ādi 10.98

anna-jala tyāga kaila anya-kathana
pala dui-tina māṭhā karena bhakṣaṇa
Word for word: 
anna-jala — food and drink; tyāga — renunciation; kaila — did; anya-kathana — talking of other things; pala dui-tina — a few drops of; māṭhā — sour milk; karena — does; bhakṣaṇa — eat.
Translation: 
Raghunātha dāsa Gosvāmī gradually gave up all food and drink but a few drops of buttermilk.