Bhagavad Gita Verse 16.21

काम, क्रोध तथा लोभ — ये तीन प्रकार के नरक के द्वार आत्मा का नाश करने वाले अर्थात् उसको अधोगति में ले जाने वाले हैं । अतएव इन तीनों को त्याग देना चाहिये

O Arjuna, there are three entrances or gateways to hell, all leading to the death of the self. These particular gates are known as the gateways of lust, anger, and greed. Man should avoid these gateways all his life or he shall inevitably suffer in hell after his death.