>>22957
>Obligatory dogma/beliefs/practices needs to be founded in divine Revelation first of all, while secondary sources/hadiths are there to illuminate the dogma, clarify, elaborate on the history and context, etc.
We're told to obey what the Prophet says here: (5: 92), (4: 59), (24: 54), (4:13), (33:71), (4:64). That is the foundation in the divine revelation for following the words of the Prophet saws. A practice, invention, or belief taken from the Prophet is by definition part of the religion, not an innovation so long as it can be authentically ascribed to the Prophet.
>>22959
Refer to the term jamaa'ah which is lazily translated, this historically refered to the local organized polity of muslims. If a muslim in a country ruled by sharia leaves Islam then yes, he is to be killed. But first he is given ample time and counsel to be brought back to his senses. Brown is talking about the secular world and secular Islamic states like Egypt. The basic principle of maslaha allows for these kind of practical distinctions regarding applying islamic law.
>example of this is the "man who commits adultery" and "a soul for a soul". which is ofc made for all time and not only in the medieval period.
Yes for all time within an Islamic polity.