SB 10.51.35

evaṁ sambhāṣito rājñā
 bhagavān bhūta-bhāvanaḥ
pratyāha prahasan vāṇyā
 megha-nāda-gabhīrayā
Word for word: 
evam — thus; sambhāṣitaḥ — spoken to; rājñā — by the King; bhagavān — the Supreme Lord; bhūta — of all creation; bhāvanaḥ — the origin; pratyāha — He replied; prahasan — smiling broadly; vāṇyā — with words; megha — of clouds; nāda — like the rumbling; gabhīrayā — deep.
Translation: 
[Śukadeva Gosvāmī continued:] Thus addressed by the King, the Supreme Personality of Godhead, origin of all creation, smiled and then replied to him in a voice as deep as the rumbling of clouds.