Treaty of Hudaybiyyah
The sīra literature includes a variety of heterogeneous materials, containing mainly narratives of military expeditions undertaken by Muhammad and his companions. These stories are intended as historical accounts and are used for veneration. The sīra also includes a number of written documents, such as political treaties (e.g., Treaty of Hudaybiyyah or Constitution of Medina), military enlistments, assignments of officials, letters to foreign rulers, and so forth. It also records some of the speeches and sermons made by Muhammad, like his speech at the Farewell Pilgrimage. Some of the sīra accounts include verses of poetry commemorating certain events and battles.