Vaisesika Sūtra 9.2.11

तद् दुष्टज्ञानम् ॥११॥

tad duṣṭa-jñānam ॥11॥

[तत् (tad) - that; दुष्टज्ञानम् (duṣṭa-jñānam) - faulty knowledge;]

That is faulty knowledge.