Chapter 3: Sloka 37

3.37

śrī-bhagavān uvāca

kāma eṣa krodha eṣa
rajo-guṇa-samudbhavaḥ
mahāśano mahā-pāpmā
viddhy enam iha vairiṇam

śrī bhagavān uvāca—the Personality of Godhead said; kāmaḥ—lust; eṣaḥ—all these; krodhaḥ—wrath; eṣaḥ—all these; rajo-guṇa—the mode of passion; samudbhavaḥ—born of; mahā-śanaḥ—all-devouring; mahā-pāpmā—greatly sinful; viddhi—know; enam—this; iha—in the material world; vairiṇam—greatest enemy.

The Blessed Lord said: It is lust only, Arjuna, which is born of contact with the material modes of passion and later transformed into wrath, and which is the all-devouring, sinful enemy of this world.