मनुस्मृति - तामस लक्षण

लोभः स्वप्नोऽधृतिः क्रौर्यं नास्तिक्यं भिन्नवृत्तिका |
याचिष्णुता प्रमादश्च तामसं गुणलक्षणम् ||

- मनुस्मृति

The following are the qualities of darkness (found in a person): greed, laziness (always dreaming), fear, cruelty, disbelief, lacking righteousness in occupation, beggary, insanity.

- Manu Smriti