Asbab al-Nuzul (Revelational Circumstances of the Quran)
The Revelational circumstances behind the Qur'anic verses are held to be recorded in the Hadith. The earliest surviving book relating solely to this genre can also be found on quranx: Asbab Al-Nuzul by Al-Wahidi (d. 468AD / 1075CE) containing further revelational circumstances according to various traditional accounts.
- Asbāb al-Nuzūl By: Alī ibn Ahmad al-Wāhidī Translated By: Mokrane Guezzou Edited and with a brief Introduction by Yousef Meri. Introduction: pp iv. They also note here that some scholars such as Andrew Rippin doubt the existence of earlier 'circumstances of revelation' works mentioned which do not survive - though the translators disagree this is sufficient evidence to reject their existence.