C.What is the correct path for Muslims to unite? Is it not for eachsect to concede some of what it holds onto so that they can meetin a middle ground between all factions?

Answer:
Firstly, if the subject of disagreement were a piece of land or a share of
inheritance, your suggestion might be appropriate—given the
obscurity of the truth and the weakness of evidence. However, what
we are dealing with is not of this nature. For religion is the decisive
religion of Allah, upon which He Himself has established evidence and
set up decisive, conclusive proofs for every point of disagreement. He
has commanded people to follow it completely. No one has the right to
change it or concede anything from it. All that is required to resolve
disagreement is for people to be fair to themselves, prioritize truth
over desire, and sever the attachments of this world from their hearts.
Secondly, the matters of disagreement—which we will mention later—
have no “middle ground” and do not accept half-solutions. They are
either truth or falsehood. Consider, O questioner, and compare
between those who say: “Allah has a hand, a shin, an eye…” etc., and
those who negate that. Compare between those who allege that Allah
the Almighty creates sins within humans, then forbids them from them
and punishes them for them, and those who declare Allah free from
such things. What could the supposed “middle ground” be for the two
parties to meet and unite upon? Is it to affirm one eye instead of two,
or one hand instead of two? Or to assert that Allah created some sins
but not others? Exalted is Allah far above all of that! This is the nature
of the matters disagreed upon.