I'm not sure what you mean brother but these are six pillars that are mentioned in the hadith where the prophet explains what faith is.
There is no sixth pillar. As the brother above mentioned first pillar has sub sections. According to Kharijites sixth pillar was Jihad but that has always been unapproved by mainstream scholars.
I think other brs has explained it well, but I'll add my 2 cents.
(1) shahad is proclaiming that you believe in one God and his messenger and you will follow that messenger. That is following Quran and Sunnah, if it is not that then tell me what it is then?
(2) 5 pillars are the basic tenets derived from Quran, they are not outside Quran and thus sunnah. A person cannot take them in isolation against Quran and sunnah, this would be absurd :blind::giggling:
5 pillars are what they are as they are in Quran; all the 5 pillars are there in the Quran. There is no word shahada per se in Quran, but it means basic Islamic creed. That is what it is "Islamic creed".
As for Thinker's question whether that person is muslim or not, well I've encountered thinker before, s/he has a habit of taking thinkings out of context and unnecessarily argumentative. And I think, s/he is taking this thread into that direction too. Thats why I asked:
(1) Whether that guy is rejecting verses or certain interpretations of them?
(2) Whether he is rejecting sunnah competely or he accepts sunnah in general but doesn't believe or follow certain things in sunnah?
First part no muslim would do but second part is whole different ball game.
For example:
A) Allegedly 'wife beating' verse. There are certain people I know who doesn't accept that interpretation. They say word has two meanings and according to sunnah its meaning is not 'beat' but 'separate.' Because thats what Prophet (pbuh) did instead of beating his wife (wives). He (pbuh) separated when he had some argument going on with his wives.
Some other I know take its meaning as beat but they have reservation with the verse.
B) Some people have disagreements what is sunnah and what is not. For example, according to some people eating with hands is not sunnah or applicable as sunnah, just as riding a camel is not sunnah or applicable as sunnah.
However, they people still believe in the Quran as whole and sunnah in general even though they have disagreements or/and reservations over certain interpretations of verses or/and certain things in sunnah.
I wouldn't take these people out of Islam as these are gray areas and even Islamic scholars had/have differing opinions about them.
I hope this makes clear.