Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 16

Sanskrit:

सम्पूज्य देवऋषिवर्यमृषि: पुराणोनारायणो नरसखो विधिनोदितेन ।वाण्याभिभाष्य मितयामृतमिष्टया तंप्राह प्रभो भगवते करवाम हे किम् ॥ १६ ॥

ITRANS:

sampūjya deva-ṛṣi-varyam ṛṣiḥ purāṇonārāyaṇo nara-sakho vidhinoditenavāṇyābhibhāṣya mitayāmṛta-miṣṭayā taṁprāha prabho bhagavate karavāma he kim

Translation:

After fully worshiping the great sage of the demigods according to Vedic injunctions, Lord Kṛṣṇa, who is Himself the original sage — Nārāyaṇa, the friend of Nara — conversed with Nārada, and the Lord’s measured speech was as sweet as nectar. Finally the Lord asked Nārada, “What may We do for you, Our lord and master?”

Purport:

In this verse the words nārāyaṇo nara-sakhaḥ indicate that Kṛṣṇa is Himself the Supreme Lord, Nārāyaṇa, who appeared as the friend of the sage Nara. In other words, Lord Kṛṣṇa is ṛṣiḥ purāṇaḥ, the original and supreme spiritual master. Nevertheless, following the Vedic injunctions (vidhinoditena) that a kṣatriya should worship the brāhmaṇas, Lord Kṛṣṇa happily worshiped His pure devotee Nārada Muni.