‘Illa, kāraṇa, gù: what each tradition’s word for ’cause’ lets it ask
I research classical Arabic philosophy in Beirut, and I've been thinking about how the translators of the ninth and tenth centuries handled Aristotle's aitia. They used 'illa and sabab, and here is the interesting part: 'illa already had, or soon acquired, a second life in law.
In Islamic jurisprudence, the 'illa is the operative reason of a ruling, the feature that lets a jurist extend it by analogy (qiyās). Wine is forbidden; the 'illa is intoxication; so other intoxicants fall under the ruling. The same word names a cause in physics and the ground of a legal ruling.
Aristotle's aitia was already broad, covering explanation and responsibility together. So the Arabic word kept that breadth, but in a different direction: towards legal reasoning rather than towards natural science.
That makes me want to compare. What does each tradition's word for "cause" let its thinkers ask, and what does it hide? I'd love to hear from people who know the Sanskrit, the Chinese, the Buddhist vocabulary.