प्रवृत्तिं च निवृत्तिं च जना न विदुरासुराः। न शौचं नापि चाचारो न सत्यं तेषु विद्यते ॥

pravṛittiṁ cha nivṛittiṁ cha janā na vidur āsurāḥ na śhauchaṁ nāpi chāchāro na satyaṁ teṣhu vidyate

Demoniacal men know neither right energy nor right abstinence; nor purity, nor even propriety, nor truth is in them.

In plain words: Krishna says demonic people do not know when to act and when to hold back. They have no purity, no good manners, and no truthfulness.