Jñāneśvarī (commentary on the Bhagavadgītā) 4.160

4.160

dekheṃ paramātmasukhanidhāna |
sādhāvayā yogījana |
jeṃ na visaṃbitī aṃjana |
unmeṣanetrīṃ ||

See, in order to attain the treasure of the Supreme Self’s bliss,
yogins never fail to apply
the collyrium [of knowledge]
to the eye of flashing forth of spiritual consciousness;