Asbab al-nuzul

The Pen (, al-qalam), or Nūn (Arabic: نٓ) is the sixty-eighth chapter (sūrah) of the Qur'an with 52 verses (āyāt). Quran 68 describes God's justice and the judgment day. Three notable themes of this Surah are its response to the opponents' objections, warning and admonition to the disbelievers, and exhortation of patience to the Islamic prophet Muhammad. Chronologically, this was the first appearance of any of the "disjointed" [i.e., single] letters (muqattaat) which precede a number of the surahs of the Qur'an, while in Quranic order this is the last surah to have the appearance of muqattaat.

surahs of the Quran supposed to have been revealed or composed in Medina (as opposed to Mecca), after the Hijra

surahs of the Quran supposed to have been revealed or composed in Mecca (as opposed to Medina), before the Hijra

historical context in which Quranic verses were revealed