Jñāneśvarī (commentary on the Bhagavadgītā) 9.43

9.43

pari teṃci aiseni nivāḍe |
jaiseṃ bhesaḷaleṃ khareṃ kuḍeṃ |
maga kāḍhije phāḍovāḍeṃ |
pārakhūniyā ||

Yet it will be told with such discrimination,
just as when genuine and counterfeit are mixed,
they are separated completely
after testing them;