Ordering the Surahs according to the `Uthmany Mus-haf

Q 1: Please find attached a copy of Juz’ ‘Amma (the last 30th of the Qur’an), with footnotes giving the meanings of difficult words. I noticed in it that the Surahs are arranged in reverse order, starting with Surah Al-Nas and ending with Surah ‘Amma.Please advise if this order is permissible and whether the order of the Qur’anic Surahs is Tawqifiy (bound by a religious text and not amenable to personal opinion) or not?May Allah reward you with the best.

A: It is obligatory that the Surahs should follow the same order as in the ‘Uthmany script of the Mus-haf (copy of the Qur’an). Accordingly, the last Juz’ should start with Surah ‘Amma (Al-Naba’) and end with Surah Al-Nas.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.