Bg 18.34

yayā tu dharma-kāmārthān
dhṛtyā dhārayate ’rjuna
prasaṅgena phalākāṅkṣī
dhṛtiḥ sā pārtha rājasī
Synonyms: 
yayā — by which; tu — but; dharma — religiosity; kāma — sense gratification; arthān — and economic development; dhṛtyā — by determination; dhārayate — one sustains; arjuna — O Arjuna; prasaṅgena — because of attachment; phala-ākāṅkṣī — desiring fruitive results; dhṛtiḥ — determination; — that; pārtha — O son of Pṛthā; rājasī — in the mode of passion.
Translation: 
But that determination by which one holds fast to fruitive results in religion, economic development and sense gratification is of the nature of passion, O Arjuna.
Purport: 

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.