Bhagavad Gita Chapter 4.37
yathaidhāḿsi samiddho ’gnir
bhasma-sāt kurute ’rjuna
jñānāgniḥ sarva-karmāṇi
bhasma-sāt kurute tathā
Translation
As a blazing fire turns firewood to ashes, O Arjuna, so does the fire of knowledge burn to ashes all reactions to material activities.