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In these divinely revealed texts, there is a refutation of the likes of Hizb ut-Tahrir, al-Muhajiroon, and all the group-names they go under, "the Ghurubaa", "the Saved Sect" and so on which they use to deceive the Muslims and to conceal their true identity and ideology.
The khilaafah lasted thirty years upon the way of Prophethood and from that time kingship entered the Ummah up until this day of ours, with an honourable mention of the rule of mercy of Mu'aawiyah (radiallaahu anhu), who was the first king, and the rule of Umar bin Abdul-Azeez (rahimahullaah).
This indicates the ignorance of these people who chant "1924" thinking that the khilaafah was abolished in 1924. The Ottoman State was a hereditary kingship judging with a mixture of Hanafi law and the "Qanun" law based upon localized customs (urf), much of which were remnants of the Yasaa of Genghis Khan. Further, from 1858 to 1875 there was much provision made for secular law and its practice within the Ottoman state. This indicates the intellectual and academic fraud that underlies the ideology of the likes of Hizb ut-Tahrir, al-Muhajiroon and others who peddle the false doctrine that establishing the khilafah isthe greatest obligation of our times, after what they believe, wrongly, was the removal of the khilaafah in 1924. The greatest obligation is to single out Allaah in worship and give obedience to Him and His Messenger. It is when the Muslims fulfil this obligation, that Allaah Himself grants victory and authority to them - this is the divine law in the creation. Most of these groups are not interested in calling the people to this in a specific detailed sense, rather their aims are purely political.
Affirmation through the divinely revealed text that Mu'aawiyyah was the first king in Islaam, and that from his time, hereditary kingship was the mode of rule, and that Allaah gives the rule to whomever He pleases. And that after the Prophetic khilaafah a biting type of kingshipappeared, one in which Islaam was not applied completely in all areas. It was in this midst that the innovations of the Qadariyyah and the Murji'ah also appeared. [...]