[Quranic Reflection]: moon absorbed by the sun in the Quran: far future.

[R00tKiT]

Their being astute military leaders also goes a long way to explaining the content of the text.  Anywho, magic book plugged along for awhile as a limited act in a mostly illiterate culture until those astute warlords managed to conquer their neighbors, capturing and enslaving the means of literary production.  It was then that magic book as an item really took off.

Primary islamic sources...150-300 years after the events described.

Nothing really in the Qur'an confirms you theory here. Besides, the writing of the Qur'an ended under the third caliph Uthman, twenty years after Muhammad's death. And all what was written is based on multiple oral recitations that are compared together.

Another good anecdote : the Birmingham Quran manuscript was dated between 568 and 645 CE. Muhammad's prophetic career was between 610 and 632 CE.