Jñāneśvarī (commentary on the Bhagavadgītā) 2.152

2.152

athavā aisā neṇasī |
tūṃ aṃtavaṃtaci heṃ mānisī |
tarhī śocūṃ na pavasī |
paṃḍukumarā ||

Or if you do not know it as such / and consider it to be truly perishable, / even so you should not grieve, / O son of Pāṇḍu!