CC Ādi 3.58
দকৃষ্ণাঙ্গং কৃষ্ণং মখবিধিভিরুৎকীর্তনময়ৈঃ ।
উপাস্যঞ্চ প্রাহুর্যমখিলচতুর্থাশ্রমজুষাং ।
স দেবশ্চৈতন্যাকৃতিরতিতরাং নঃ কৃপয়তু ॥ ৫৮ ॥
akṛṣṇāṅgaṁ kṛṣṇaṁ makha-vidhibhir utkīrtana-mayaiḥ
upāsyaṁ ca prāhur yam akhila-caturthāśrama-juṣāṁ
sa devaś caitanyākṛtir atitarāṁ naḥ kṛpayatu
kalau — in the Age of Kali; yam — Him whom; vidvāṁsaḥ — the learned men; sphuṭam — clearly manifested; abhiyajante — worship; dyuti-bharāt — due to an abundance of bodily luster; akṛṣṇa-aṅgam — whose body is not blackish; kṛṣṇam — Lord Kṛṣṇa; makha-vidhibhiḥ — by the performances of sacrifice; utkīrtana-mayaiḥ — consisting of loud chanting of the holy name; upāsyam — worshipable object; ca — and; prāhuḥ — they said; yam — whom; akhila — all; caturtha-āśrama-juṣām — of those who are in the fourth order of life (sannyāsa); saḥ — He; devaḥ — the Supreme Personality of Godhead; caitanya-ākṛtiḥ — having the form of Lord Caitanya Mahāprabhu; atitarām — excessively; naḥ — unto us; kṛpayatu — let Him show His mercy.
“By performing the sacrifice of congregational chanting of the holy name, learned scholars in the Age of Kali worship Lord Kṛṣṇa, who is now nonblackish because of the great upsurge of the feelings of Śrīmatī Rādhārāṇī. He is the only worshipable Deity for the paramahaṁsas, who have attained the highest stage of the fourth order [sannyāsa]. May that Supreme Personality of Godhead, Lord Caitanya, show us His great causeless mercy.”
This verse is Dvitīya Śrī Caitanyāṣṭaka 1, from the Stava-mālā of Śrīla Rūpa Gosvāmī.