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.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
अहीन्द्रसाहस्रकठोरदृङ्मुख- श्वासाग्निधूमाहतवर्चसोऽसुराः । पौलोमकालेयबलील्वलादयो दवाग्निदग्धाः सरला इवाभवन्
ahīndrasāhasrakaṭhoradṛṅmukha- śvāsāgnidhūmāhatavarcaso'surāḥ | paulomakāleyabalīlvalādayo davāgnidagdhāḥ saralā ivābhavan
SB 8.7.14