Vaisesika Sūtra 6.1.07

दुष्टं हिंसायाम् ॥७॥

duṣṭaṁ hiṁsāyām ॥7॥

[दुष्टम् (duṣṭam) - wicked; हिंसायाम् (hiṁsāyām) - in injury / violence;]

Wickedness is rooted in violence.