Bhishma said Hear, O king, what is the origin of sin! Covetousness alone is a great destroyer. From covetousness originates sin.
भीष्म उवाच पापस्य यदधिष्ठानं तच्छृणुष्व नराधिप। एको लोभो महाग्राहो लोभात् पापं प्रवर्तते॥