Why does "Ar-Rikaz" (Buried treasure) come under the chapter of Kharaj and not the chapter of Zakat? Is the fifth of Rikaz taken when it reaches the "Nisab"?

Islamic Personality (Shakhsiya), Volume One page 46 (Arabic version): "Allah (swt) will enter those He wills from the Muslims into hellfire whose majors and sins outweigh their minors  and rewards". What is meant by their minors? Why was it mentioned next to the rewards if it means minor sins?

My question is on an article in the Constitution. In article 7, clause 4 or clause D from the English translation of the second edition 2010, it is stated: "The non-Muslims will be treated in matters related to foodstuffs and clothing according to their faith and within the scope of what the Shari'ah rules permit". My question is related to clothing.

There are some comments on some websites that state: "That Hizb ut Tahrir has defined the method of seeking the Nussrah (material support) to establish the Khilafah "Caliphate", while it abides to, and does not acknowledge any other Legislative (Shari') method... which is "the method of the dominant Sultan", i.e. the one who establishes the state by force and fighting... they also said that Hizb ut Tahrir objected Baghdadi's declaration…