Overview of the Transmission
These two successive and related events are represented in the ʿUrwa corpus by several traditions according to Hišām b. ʿUrwa ← ʿUrwa (← ʿĀʾiša), which contain the main incidents of both events and are available in several versions (ʿAbd Allāh b. Numayr, Ḥammād b. Salama, ʿAbda b. Sulaymān, Ibn Abī Zāʾida). Part of these traditions form a coherent (albeit relatively short) narrative.
Ibn Isḥāq, in his K. al-Maġāzī, lists Yazīd b. Rūmān (← ʿUrwa) as one of his informants in the collective isnād, under which he places his longer account of the Battle of the Trench and the Banū Qurayẓa. In the Sīra (Ibn Hišām's adaptation of Ibn Isḥāq's book), the tradition material traced back to Yazīd ← ʿUrwa cannot be identified, but some traditions belonging here can be determined by comparison with the other Ibn Isḥāq transmission. These traditions are, on the one hand, a version of the story of the spy Nuʿaym b. Masʿūd, and, on the other, exegetical traditions that refer to certain verses of sūra 33. (The verses 9-27 of sūra 33 are related to the Battle of the Trench by the commentators.)
At least as important a source for our knowledge of the two events as the transmission according to Hišām b. ʿUrwa ← ʿUrwa is the much more detailed transmission according to al-Zuhrī. Longer or shorter parts of it are also preserved in several versions (Maʿmar, Ibn Isḥāq, ʿUqayl, Mūsā b. ʿUqba). Al-Zuhrī's reports largely correspond to those of Hišām ← ʿUrwa. However, for most of his traditions, al-Zuhrī does not give any sources at all; and not once does he name ʿUrwa. Ibn Isḥāq, too, names only al-Zuhrī in the above-mentioned collective isnād (in the Sīra) as well as in the text itself, where he explicitly refers to al-Zuhrī for individual traditions, but in no case does he name any of al-Zuhrī's informants.
The Hišām b. ʿUrwa Recension
In the following, the important traditions according to Hišām ← ʿUrwa (← ʿĀʾiša) concerning the events will be discussed first. Most significant is a longer, welldocumented tradition that has survived in its entirety and in parts and contains the central incidents of both events. At its centre is the person of Saʿd b. Muʿāḏ, who, mortally wounded in the Battle of the Trench, passed the terrible death sentence on the Banū Qurayẓa.