My Dear, Loyal Brother, Re’fet Bey!
I cannot meet with indifference your learned questions since they are the keys to important truths contained in the part of the Risale‑i Nur called Mektûbat (Letters). A short answer is as follows:
Since the Qur’an is a pre‑eternal address and speaks with all the classes of humanity and all the groups of worshippers, it has to possess numerous meanings conformable with them, and numerous levels of the universal meanings. Some commentators choose only the most general or the most explicit meaning, or one which expresses an obligatory act or a confirmed practice of the Prophet (UWBP).
For example, for the verse, And in the night glorify Allah they mention an important Sunna, the two rak‘as of the tahajjud prayer, and for the verse the flight of the stars the early morning Fajr sunna, which is a confirmed Practice of the Prophet (UWBP). And there are numerous other constituents of the former meaning. My brother! Speaking with you does not cease.