Jñāneśvarī (commentary on the Bhagavadgītā) 1.240

1.240

kā samora agni dekhonī |
jarī na vacije vosaṃḍonī |
tarī kṣaṇā ekā kavaḷūni |
jāḷūṃ śake ||

Or if, seeing a fire before oneself, / one does not turn away and step aside, / then in an instant it can envelop / and burn one to ashes.