This was said by the Buddha, the Perfected One: that is what I heard.

“Mendicants, there are these three unskillful roots. What three? Greed, hate, and delusion. These are the three unskillful roots.”

The Buddha spoke this matter. On this it is said:

“When greed, hate, and delusion, 
have arisen inside oneself, 
they harm a person of wicked heart, 
as a bamboo is destroyed by its own fruit.”

This too is a matter that was spoken by the Blessed One: that is what I heard.