CC Madhya 13.80
nāhaṁ varṇī na ca gṛha-patir no vanastho yatir vā
gopī-bhartuḥ pada-kamalayor dāsa-dāsānudāsaḥ
na — not; aham — I; vipraḥ — a brāhmaṇa; na — not; ca — also; nara-patiḥ — a king or kṣatriya; na — not; api — also; vaiśyaḥ — belonging to the mercantile class; na — not; śūdraḥ — belonging to the worker class; na — not; aham — I; varṇī — belonging to any caste, or brahmacārī (A brahmacārī may belong to any caste. Anyone can become a brahmacārī, or lead a life of celibacy.); na — not; ca — also; gṛha-patiḥ — householder; no — not; vana-sthaḥ — vānaprastha, one who, after retirement from family life, goes to the forest to learn how to be detached from family life; yatiḥ — mendicant or renunciant; vā — either; kintu — but; prodyan — brilliant; nikhila — universal; parama-ānanda — with transcendental bliss; pūrṇa — complete; amṛta-abdheḥ — who is the ocean of nectar; gopī-bhartuḥ — of the Supreme Person, who is the maintainer of the gopīs; pada-kamalayoḥ — of the two lotus feet; dāsa — of the servant; dāsa-anudāsaḥ — the servant of the servant.
“ ‘I am not a brāhmaṇa, I am not a kṣatriya, I am not a vaiśya or a śūdra. Nor am I a brahmacārī, a householder, a vānaprastha or a sannyāsī. I identify Myself only as the servant of the servant of the servant of the lotus feet of Lord Śrī Kṛṣṇa, the maintainer of the gopīs. He is like an ocean of nectar, and He is the cause of universal transcendental bliss. He is always existing with brilliance.’ ”
This is verse 74 from the Padyāvalī, an anthology of verses compiled by Śrīla Rūpa Gosvāmī.