1-Designation.2-The Incident.3-Time and Tribe.4-In the Qur'an and in Christian Reports.5-Historical Background.5.1-The Report by Wahb b. Munabbih.5.2-The Report by Muhammad b. Ka'b al-Qarzi.5.3-In Christian Sources.6-Likening Some Companions of Shi'ite Imams to Ashab al-Ukhdud.7-Notes.8-References.