Grammatical Analysis
Hetupaccaya: [m.] Root condition. Formed by hetu (root, primary cause) + paccaya (condition, relating factor).
Orthodox Definition
Hetu-paccaya is the very first of the 24 Conditions enumerated in the Paṭṭhāna. It describes the specific causal relationship where a fundamental root stabilizes and nourishes the mental and physical phenomena that arise alongside it.
In Abhidhamma, there are exactly six “roots” (hetus): greed, hatred, delusion (the unwholesome roots), and non-greed, non-hatred, non-delusion (the wholesome/indeterminate roots).
The classic commentarial simile for Hetu-paccaya is a tree root. Just as the roots of a tree firmly anchor it to the earth and draw up nutrients allowing the trunk and branches to grow and flourish, the six mental roots anchor the associated consciousness (citta) and mental factors (cetasikas) firmly into their object, giving them stability and defining their ethical quality.
Textual References
- Abhidhamma: Paṭṭhāna (Paccayuddesa) – “The roots are related to the phenomena associated with roots, and to the material phenomena produced thereby, by root condition.”
- Historical: Abhidhammatthasaṅgaha (Chapter VIII) – The structural summary mapping how the roots interact with mundane and supramundane consciousness.