Bhagavatapurana 8.22.5

8.22.5

tvaṃ nūnamasurāṇāṃ naḥ parokṣaḥ paramo guruḥ /
yo no 'nekamadāndhānāṃ vibhraṃśaṃ cakṣurādiśat //

5. "Indirectly, _i.e._, in the guise of an enemy, Thou art certainly the highest preceptor to us, Asuras; for, Thou hast given an eye in this fall to us who have been blinded by pride of many (sources).