Pledge of the Tree

The Pledge of the Tree (Arabic: بيعة الشَّجَرَة, romanized: bayʿat ash-shajara) was a pledge that was sworn to the Islamic prophet Muhammad by his companions prior to the Treaty of al-Hudaybiya (6 AH/628 CE). The pledge, sworn under a tree, was to avenge the rumoured death of Uthman.