Greed, hatred and delusion, lobha, dosa and moha, are the roots of all unwholesome action and the fires that nirvāṇa extinguishes. Their opposites, generosity, loving-kindness and wisdom, are the wholesome roots. Tibetan art depicts the three poisons as a cock, a snake and a pig at the centre of the wheel of life.
Three poisons
Greed, hatred and delusion: the three roots of unwholesome action in Buddhism.
Also: three unwholesome roots, three fires