Discontent, heart-burning, grief, cupidity, vindictiveness, are all marks of darkness. They are seen with or without sufficient causes for producing them.
अतुष्टिः परितापश्च शोको लोभस्तथाक्षमा। लिङ्गानि रजसस्तानि दृश्यन्ते हेत्वहेतुभिः॥