Bhagavad-gītā 4.37
BG 4.37
Open the full passageयथैधांसि समिद्धोऽग्निर्भस्मसात्कुरुतेऽर्जुन । ज्ञानाग्निः सर्वकर्माणि भस्मसात्कुरुते तथा ॥३७॥
Sanskrit
yathaidhāṁsi 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.