Assalamu Alaikum,
This topic has been addressed many times, so I won't go over it again.
I just wanted to comment on the following:
You said:
First, The Messenger (s.a.w.a.) asks Allah (s.w.t.) to testify that `Ali (a.s.) is mawla of the people right after the testimony that there is only one God and that Muhammad (s.a.w.a.) is the messenger. Therefore, the mawla-hood of `Ali (a.s.) is part and parcel of Islamic faith, just as tawhid and nubuwwah are.
I don't like this "
therefore". This was something that always annoyed me about Shiism. Why does everything have to be qualified beforehand with a
"therefore", "
so this must mean", "
in other words" e.t.c.
This is an issue of the
foundations of the faith. There can be no room for interpretation. Can we interpret the following foundations of faith:
1. TawhidWho can argue that belief in tawhid is not obligatory in Islam? Tawhid is spelled out in the Qur'an as though it were meant for a baby to understand.
"Say, He Allah is One!" Qur'an 112:1
2. NubuwahCan we argue that Muhammad (saws) is the messenger of Allah (swt)? Is there any room for interpretation here? The Qur'an makes this abundantly clear.
"Muhammad is the Messenger of Allah!" Qur'an 48:29
3. Salaat, ZakaatAgain, any room for interpretation? Sure, we can argue over how to pray, how to give zakat, but can we argue that it is obligatory? Ofcourse not. The Qur'an makes this clear in dozens of verses, one of which is:
"Tell my believing servants to establish prayer and give in charity!" Qur'an 14:31
4. Hajj"And complete the Hajj and Umrah!" Qur'an 2:196
----------------
The fact is, you don't need to refer to any ahadith to prove that these are core beliefs of Islam.
You need ahadith to explain the details yes, but not to prove that they are obligatory beliefs or practises.
Let me ask you this - can you prove that 'Ali was the successor, or that 12 Imams exist, without any hadith?
The answer ofcourse is no, you can't.
So, what's my point? My point is, there are two modern-day interpretations for the Prophet (saws)'s words at Ghadir Khumm.
1. 'Ali (ra) is the ally of every believer.
2. 'Ali (ra) is the successor to the Prophet (saws).
Which of these beliefs is obligatory?
Obviously, only number 2. Point number 1 is good to know, but not obligatory for one to know about, or even to believe in.
Knowing that every other obligatory belief in Islam is specifically spelled out in the Qur'an - isn't it strange that 'Ali (ra) being the successor isn't? Isn't it strange that the
only way to know that 'Ali (ra) was designated the successor is by interpreting a hadith - all the while knowing that every other obligatory belief in Islam can be proven
without ahadith?
What should a person do in this case? He should adopt the course of moderation, and reject that extremist opinion - and the extremist opinion is without a doubt the opinion that 'Ali (ra) was made the successor on the day of Ghadir Khum.