BG Chap 18 - Determination in the mode of passion

That determination by which a person desiring results because of association with similar persons, engages the senses and mind in activities to attain dharma, artha and käma is in the mode of passion. Any person who is always desirous of fruitive results in religious or economic activities, whose only desire is sense gratification, and whose mind, life and senses are thus engaged is in the mode of passion.