Srimad-Bhagavatam: Canto 8 - Chapter 1 - Verse 14
Sanskrit:
अहीन्द्रसाहस्रकठोरदृङ्मुख-श्वासाग्निधूमाहतवर्चसोऽसुरा: ।पौलोमकालेयबलील्वलादयोदवाग्निदग्धा: सरला इवाभवन् ॥ १४ ॥
ITRANS:
ahīndra-sāhasra-kaṭhora-dṛṅ-mukha-śvāsāgni-dhūmāhata-varcaso ’surāḥpauloma-kāleya-balīlvalādayodavāgni-dagdhāḥ saralā ivābhavan
Translation:
Vāsuki had thousands of eyes and mouths. From his mouths he breathed smoke and blazing fire, which affected the demons, headed by Pauloma, Kāleya, Bali and Ilvala. Thus the demons, who appeared like sarala trees burned by a forest fire, gradually became powerless.