AN INTRODUCTION TO ISLAMIC LAW (right click, save as)
Studies in Early Muslim Jurisprudence
by Norman Calder
Or here (right click).
Rethinking Tradition in Modern Islamic Thought by Daniel Brown
One of the best books out there. Charts the history of hadith/sunna within Islam, with a focus on the debates surrounding their legitimacy.
Summary here: https://pressthat.wordpress.com/2007/05/09/rethinking-tradition-in-modern-islamic-thought-by-daniel-brown/
Read book online here: https://www.scribd.com/document/116836545/Rethinking-Traditions-in-Modern-Islamic-Thought-Daniel-w-Brown
Transmission and Collection of Hadith
by Jonathan Brown
(right click, save as)
Western debates over reliability and authenticity of Prophetic traditions (Hadith)
Jonathan Brown gives a summary:
Jonathan Brown gives a summary on the history and methods of Hadith criticism: