As discussed here and in many other discussions:
1 - Quran is the eternal/uncreated word of God.
2 - And people actions are created.
3 - Now, Books which we read & the words which we speak are our actions which are created as we just agreed in the 2nd point, than how come the recitation of the Quran or the Quranic mushaf is the eternal word of God? Like how do Muslims come to this conclusion logically?
If our actions are created and yet, what we recite or what we read is the eternal word of God, how is it different to an Atheist believing the Universe came from nothing or a Christian believing 3=1 ??
And finally, is there a Quranic verse or an authentic Hadith or a saying of a "Sahabi" about this matter? Is there an authentic Hadith or Quranic verse which says this question i.e "created/uncreated" is one of the questions that will be asked in grave or on the day of Judgement?