Jñāneśvarī (commentary on the Bhagavadgītā) 2.251

2.251

jaisā karpūrācā rāśi kīje |
maga agni lāūni dīje |
kaṃ miṣṭānnīṃ saṃcaravije |
kāḷakūṭa ||

Just as one might make a heap of camphor
and then set fire to it,
or introduce virulent poison
into delicious food;