darśitāṅgādi-vaibhavam
kalau saṅkīrtanādyaiḥ sma
kṛṣṇa-caitanyam āśritāḥ
antaḥ-internally; kṛṣṇam-Lord Kṛṣṇa; bahiḥ-externally; gauram-fair-colored; darśita-displayed; aṅga-limbs; ādi-beginning with; vaibhavam-expansions; kalau-in the Age of Kali; saṅkīrtana-ādyaiḥ-by congregational chanting, etc.; sma-certainly; kṛṣṇa-caitanyam-unto Lord Caitanya Mahāprabhu; āśritāḥ-sheltered.
"I take shelter of Lord Śrī Kṛṣṇa Caitanya Mahāprabhu, who is outwardly of a fair complexion but is inwardly Kṛṣṇa Himself. In this Age of Kali He displays His expansions [His aṅgas and upāṅgas] by performing congregational chanting of the holy name of the Lord."
Antaḥ kṛṣṇa refers to one who is always thinking of Kṛṣṇa. This attitude is a predominant feature of Śrīmatī Rādhārāṇī. Even though many devotees always think of Kṛṣṇa, none can surpass the gopīs, among whom Rādhārāṇī is the leader in thinking of Kṛṣṇa. Rādhārāṇī's Kṛṣṇa consciousness surpasses that of all other devotees. Lord Caitanya accepted the position of Śrīmatī Rādhārāṇī to understand Kṛṣṇa; therefore He was always thinking of Kṛṣṇa in the same way as Rādhārāṇī. By thinking of Lord Kṛṣṇa, He always overlapped Kṛṣṇa.