Caitanya-caritāmṛta 15.131
raghunandanera kārya — kṛṣṇera sevana kṛṣṇa-sevā vinā iṅhāra anya nāhi mana
[raghunandanera kaarya — krishnera sevana krishna-sevaa vinaa inhaara anya naahi mana]
Blended reading (Sanskrit + English inline)
raghunandanera kārya — kṛṣṇera sevana kṛṣṇa-sevā vinā iṅhāra anya nāhi mana
“Furthermore, it is the duty of Raghunandana to always engage in Lord Kṛṣṇa’s service. He has no other intention but the service of Lord Kṛṣṇa.”
My note
Source: vedabase.io