Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 29

Sanskrit:

मन्ये त्वां देवदेवानां त्रयाणां पुरुषर्षभम् ।यद् बाधसे गुहाध्वान्तं प्रदीप: प्रभया यथा ॥ २९ ॥

ITRANS:

manye tvāṁ deva-devānāṁtrayāṇāṁ puruṣarṣabhamyad bādhase guhā-dhvāntaṁpradīpaḥ prabhayā yathā

Translation:

I think You are the Supreme Personality among the three chief gods, since You drive away the darkness of this cave as a lamp dispels darkness with its light.

Purport:

Śrīla Viśvanātha Cakravartī points out that with His effulgence Lord Kṛṣṇa dispelled not only the darkness of the mountain cave but also the darkness in Mucukunda’s heart. In Sanskrit the heart is sometimes metaphorically referred to as guha, “cavern,” a deep and secret place.