SB 10.46.30

śrī-uddhava uvāca
yuvāṁ ślāghyatamau nūnaṁ
 dehinām iha māna-da
nārāyaṇe ’khila-gurau
 yat kṛtā matir īdṛśī
Word for word: 
śrī-uddhavaḥ uvāca — Śrī Uddhava said; yuvām — you two; ślāghyatamau — the most praiseworthy; nūnam — for certain; dehinām — of embodied living beings; iha — in this world; mana-da — O respectful one; nārāyaṇe — for the Supreme Lord Nārāyaṇa; akhila-gurau — the spiritual master of all; yat — because; kṛtā — produced; matiḥ — a mentality; īdṛśī — like this.
Translation: 
Śrī Uddhava said: O respectful Nanda, certainly you and mother Yaśodā are the most praiseworthy persons in the entire world, since you have developed such a loving attitude toward Lord Nārāyaṇa, the spiritual master of all living beings.
Purport: 

Understanding Nanda’s mood, as expressed by his statement manye kṛṣṇaṁ ca rāmaṁ ca prāptāv iha surottamau (“I think Kṛṣṇa and Rāma must be two exalted demigods”), Uddhava here referred to Kṛṣṇa as Lord Nārāyaṇa.