Usul al-fiqh and Dworkin’s integrity: two ways of saying law is more than its rules
I read Iqbal and Hart side by side for a living, more or less, and lately I have been adding Dworkin and al-Shafi'i to the pile. I want to test a comparison that I find tempting and suspect is partly false.
Dworkin argued against Hart that law is not just a set of rules identified by a test of pedigree. It also contains principles, such as the principle that no one should profit from his own wrong, which the New York court relied on in Riggs v. Palmer to deny an inheritance to a grandson who had murdered his grandfather. Judges find these principles by constructing the best justification of the legal practice as a whole.
Al-Shafi'i's Risala is often presented as the founding text of usul al-fiqh, the theory of the sources: Qur'an, Sunna, consensus, analogy. Analogy (qiyas) requires the jurist to identify the effective cause ('illa) of a ruling and extend it. That already looks like a principle at work. And centuries later al-Shatibi's theory of the objectives of the law (maqasid) looks even more Dworkinian: interpret rulings in light of the purposes they serve.
But there are deep differences. Dworkin's principles come from a community's political morality; the jurist in usul is seeking a ruling whose ultimate author is God. Dworkin's Hercules is confident there is one right answer; classical jurists debated whether every qualified jurist who exercises effort is correct.
Is the resemblance real or a false friend? I would welcome correction from people who know either side better than I do.