Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 17

Sanskrit:

ऐरावतं गजेन्द्राणां यादसां वरुणं प्रभुम् ।तपतां द्युमतां सूर्यं मनुष्याणां च भूपतिम् ॥ १७ ॥

ITRANS:

airāvataṁ gajendrāṇāṁyādasāṁ varuṇaṁ prabhumtapatāṁ dyumatāṁ sūryaṁmanuṣyāṇāṁ ca bhū-patim

Translation:

I am Airāvata among lordly elephants, and among aquatics I am Varuṇa, the lord of the seas. Among all things that heat and illuminate I am the sun, and among human beings I am the king.

Purport:

It is significant to know that Lord Kṛṣṇa is represented within this universe by the lord or supreme in all categories. No one can be as aristocratic and perfect as Śrī Kṛṣṇa, nor can anyone estimate the glories of Śrī Kṛṣṇa. Lord Kṛṣṇa is without doubt the Supreme Personality of Godhead.