The Four-fold Division of the Qur’an; It being Sent down upon a Single Harf; A Count of the Number of its Verses

The Qur’an came down as four fourths: A quarter concerning us, a quarter concerning our enemies, a quarter is Sunan (Precedents) and Amthāl (Similitudes), and a quarter is Farāʾiḍ (Obligations) and Aḥkām (Rulings)

I said to Abi Abdillah عليه السلام: The people say that the Qur’an came down upon seven Ahruf? So he (i.e. the Imam) said: The enemies of Allah have lied! Rather it came down upon one Harf from the One

The Qur’an that Jibril عليه السلام came with to Muhammad صلى الله عليه وآله was seventeen thousand verses

The Qurrāʾ are three: A Qāriʾ who memorized the Qur’an so as to attract by it the rulers (to himself) and gain by it prominence over the masses. So that one is among the inmates of the Fire. A Qāriʾ who memorized the Qur’an so he preserves its letters but neglects its bounds. So that one is among the inmates of the Fire. And a Qāriʾ who memorized the Qur’an so he hides with it under his hooded-cloak (i.e. to not be known). He acts by its Muḥkam (clear verses), believes in its Mutashābih (ambiguous verses), upholds its Faraiḍ (obligations), deems permissible its Ḥalāl, and forbids its Ḥarām. So this one is of those whom Allah saves from the misguiding trials, and he is among the inmates of the Garden, and he intercedes for whomsoever he wishes