The scope of jurisprudence among Muslims; the earliest elements in it, Arab custom, Jewish law, personality of Muhammad; his attitude toward law; elements after death of Muhammad; Qur’an, Usage of the Prophet, common law of al-Madina; conception of Sunna before Muhammad and after; traditions and their transmission; traditions in book form; influence of Umayyads; forgery of traditions; the Muwatta of Malik ibn Anas; the Musnad of Ahmad ibn Hanbal; the musannafs; al-Bukhari; Muslim; Ibn Maja; at-Tirmidhi; an-Nasa’i; al-Baghawi; the problem of the Muslim lawyers; their sources; Roman law; the influence of the doctrine of the Responsa prudentium; Opinion in Islam; the Law of Nature or Equity in Islam; istihsan; istislah; Analogy; the patriarchal period in Islam; the Umayyad period; the growth of the canon law.