Because of having undergone long austerities in the water, the Pracetās were very angry at the trees. Desiring to burn them to ashes, they generated wind and fire from their mouths.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
द्रुमेभ्यः क्रुध्यमानास्ते तपोदीपितमन्यवः । मुखतो वायुमग्निं च ससृजुस्तद्दिधक्षया
drumebhyaḥ krudhyamānāste tapodīpitamanyavaḥ | mukhato vāyumagniṃ ca sasṛjustaddidhakṣayā
SB 6.4.5