Vaisesika Sūtra 6.1.06

तद् दुष्टभोजने न विद्यते ॥६॥

tad duṣṭabhōjanē na vidyatē ॥6॥

[तत् (tad) - that; दुष्ट-भोजने (duṣṭa-bhōjanē) - in wicked eating; न-विद्यते (na vidyatē) - does not come to light;]

(Hence,) it does not come to light when the wicked are eating.