15. Al-Hijr

Al-Hijr, 99 Meccan verses, is named for the rock-hewn dwellings of Thamud in northwest Arabia. It recalls destroyed peoples and the guests of Abraham and Lot, and contains the pledge that God Himself sent down the Reminder and will preserve it (15:9), a verse central to Muslim belief in the Quran's integrity.

Al-Hijr's account of Thamud's rock-hewn dwellings, carved into the sandstone cliffs of a site in northwest Arabia identified in the exegetical tradition with Mada'in Salih, situates the surah's warning within a landscape early Muslims could still see for themselves on the trade route to Syria, and reports describe Muhammad instructing his companions traveling through the area not to linger or drink from its wells. The pledge that God will preserve the Reminder (15:9) is treated in Islamic theology as the scriptural basis for the doctrine that the Quran's text has been kept free from the kind of alteration Muslim tradition holds befell earlier scriptures, a claim classical commentators including al-Tabari connect to the meticulous practices of memorisation and written transmission that accompanied the Quran from its earliest recitation. The surah's brief account of Iblis' expulsion for refusing to bow to Adam (15:28-35) closely parallels the fuller version in Al-Araf, part of a Quranic pattern of retelling the same episode with varying emphasis across different surahs.

Al-Hijr refers to God having given 'the seven oft-repeated (verses) and the great Quran' (15:87), a phrase classical commentary overwhelmingly identifies with Al-Fatiha's seven verses, recited in every unit of every ritual prayer and so repeated by practising Muslims more often than any other passage in the Quran; a minority of early commentators proposed other identifications, including the seven longest surahs, but the Al-Fatiha reading became and remains the standard one. The description 'oft-repeated', mathani, is read by exegetes as pointing specifically to this constant liturgical repetition rather than to any quality of the verses' content alone.

Al-Hijr's pledge that God Himself will preserve the Reminder (15:9) is treated in Islamic theology as the scriptural foundation for the doctrine of the Quran's textual preservation, a claim classical commentators connect to the meticulous parallel practices of memorisation and written transmission that accompanied the text from its earliest recitation onward, discussed at length in works on the history of the Quran's compilation. The favours named in the surah's verse on gratitude are left unspecified rather than itemised, a deliberate open-endedness commentators read as inviting each reader to supply examples from personal experience rather than a fixed catalogue.