Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 19
Sanskrit:
ऋक्षराजबिलं भीममन्धेन तमसावृतम् ।एको विवेश भगवानवस्थाप्य बहि: प्रजा: ॥ १९ ॥
ITRANS:
ṛkṣa-rāja-bilaṁ bhīmamandhena tamasāvṛtameko viveśa bhagavānavasthāpya bahiḥ prajāḥ
Translation:
The Lord stationed His subjects outside the terrifying, pitch-dark cave of the king of the bears, and then He entered alone.