Chapters in the Quran are not arranged in the
chronological order of revelation, and the precise order has eluded scholars. According to
hadith, Muhammad told his
companions the traditional placement of every
waḥy () as was revealed to him, and
Wm Theodore de Bary, an
East Asian studies expert, describes that "The final process of collection and codification of the Qur'an text was guided by one over-arching principle: God's words must not in any way be distorted or sullied by human intervention. For this reason, no attempt was made to edit the numerous revelations, organize them into thematic units, or present them in chronological order...". A common view is that
surah of the Meccan period (i.e. pre-
hijrah) are more related to themes such as resurrection, judgment, and stories from Judaism and Christianity.
Surah of the Medinian period (i.e. post-
hijrah) focus more on laws for personal affairs, society, and the state.
Early attempts A number of medieval Islamic writers attempted to compile a chronologically ordered list of the chapters, with differing results. As no transmitted reports dating back to the time of Muhammad or his companions exists, their works necessarily represent the opinions of scholars, and none originates before the first quarter of the 8th century. One version is given in a 15th-century work by Abd al-Kafi, and is included in the chronological order given by the standard Egyptian edition of the Quran (1924). A number of verses are associated with particular events which helps date them. Muhammad's first revelation was
Chapter 96 and in the year 609. Verses
16:41 and
47:13 refer to
migration of Muslims which took place in the year 622. Verses
8:1–7 and
3:120–175 refer to battles of
Badr (624) and
Uhud (625) respectively. Muhammad's
last pilgrimage () is mentioned in 5:3 which occurred in 632, a few months before he died. This method is of limited usefulness because the Quran narrates the life of Muhammad or the early history of the Muslim community only incidentally and not in detail. In fact, very few chapters contain clear references to events which took place in Muhammad's life. Nöldeke studied the style and content of the chapters and assumed that first, later (Medinan) chapters and verses and are generally longer than earlier (Meccan) ones, and second, that earlier Meccan verses have a distinct rhyming style while later verses are more
prosaic (prose-like). According to Nöldeke, earlier chapters have common features: many of them open with oaths in which God swears by cosmic phenomena, they have common themes (including
eschatology, creation, piety, authentication of Muhammad's mission and refutation of the charges against Muhammad), and some Meccan chapters have a clear 'tripartite' structure (for example chapters 45, 37, 26, 15, 21). Tripartite chapters open with a short warning, followed by one or more narratives about unbelievers, and finally address contemporaries of Muhammad and invite them to Islam. On the other hand, Madinan verses are longer and have a distinct style of rhyming and concern to provide legislation and guidance for the Muslim community.
Mehdi Bazargan divided the Quran into 194 independent passages preserving some chapters intact as single blocks while dividing others into two or more blocks. He then rearranged these blocks approximately in order of increasing average verse length. This order he proposes is the chronological order. Bazargan assumed that verse length tended to increase over time and he used this assumption to rearrange the passages. Neal Robinson, a scholar of Islamic studies, is of the opinion that there is no evidence that the style of Quran has changed in a consistent way and therefore style may not always be a reliable indicator of when and where a chapter was revealed. According to Robinson, the problem of the chronology of authorship is still far from solved. == Names of chapters in the Quran ==