परस्त्रीद्रव्यसंकल्पश्चेतसाऽनिष्टचिंतनम् ।। अकार्याभिनिवेशश्च चतुर्द्धा कर्म मानसम् ।। ३ ।।
Pondering over other men’s wives and wealth, wishing for the ill of others mentally, conception of various evil actions and ardent longing for various mean acts, these are the four types of mental activity.