It is necessary to define the Quran, from this definition we will know what is allowed to be read in prayer and what is not. What is a proof in Hukm Shari and what is not. Also it will tell us what will make somebody a Kafir by denying and what does not constitute disbelief. So when we define Quran we mean the Quran as evidence in Fiqh. It is the word of Allah that is revealed upon his slave Muhammad in the Arabic tongue It is a miracle (Ijaaz) in even the shortest Surah, it is written down and narrated to us through Tawattur (multiple chains of transmission), through which we worship Allah by reading it, it starts with Surat al-Fatiha and ends with Surat Al-Naas. (See Al-Ihkaam by Sayf ul-Deen al-Aamidi 1/28 and Rawdat al-Nathir by Ibn- Qudama al-Maqdisi 1/178). From this definition many points come to mind. The definition excludes any Book that is not the word of Allah, or revealed in the Arabic tongue. It also excludes any narration that has not reached us via a Mutawattir chain of ...
"Thoughts are the greatest wealth of any nation."