Master of Studies in Law (MSL) Program

From University of Toronto Faculty of Law, the MSL Program (Master of Studies in Law):

The Master of Studies in Law is a very small program designed for established academics and scholars who work and write in a discipline related to law, and who wish to acquire a knowledge of law in order to add a legal dimension to scholarship in their own discipline.

Applicants should hold a doctorate from a recognized university, and should have demonstrated a high level of scholarship in a discipline related to law. Applicants often undertake this degree while on leave from their academic appointment.

You have to already have a doctorate to take this degree. I guess this is the sort of thing one would take as a sabbatical from another faculty.