At Sāvatthī.

Then King Pasenadi of Kosala went up to the Buddha, bowed, sat down to one side, and said to the Buddha, “Sir, how many things arise inside a person for their harm, suffering, and discomfort?”

“Great king, three things arise inside a person for their harm, suffering, and discomfort. What three? Greed, hate, and delusion. These three things arise inside a person for their harm, suffering, and discomfort.”

That is what the Buddha said. …

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