How did Islamic law shape social interactions and social categories in Medieval Muslim societies? The `ulama' were part of their own social/economic contexts. They engaged in commerce, owned property, bought, sold, and manumitted slaves, married and divorced and had children by wives and female slaves. How much influence did the elite `ulama', the jurists who shaped Islamic law, have on the social and economic practices of both elites and of ordinary Muslims and non-Muslims? We make use of documents, legal texts, and some narrative sources. Students also work in Rare Books and Special Collections.