What is "al-fath"

Sūrat al-Fatḥ (, "Victory, Triumph") is the 48th sura of the Qur'an with 29 ayat. It was revealed in Medina after the Treaty of Hudaibiyah, and details the circumstances and terms of that treaty along with other general religious advice. The chapter gets its name from the opening verse, which states "Indeed, We have granted you a clear triumph..." in direct reference to the Treaty which was signed through cooperation between the opposing forces and without bloodshed. The reason this treaty, and therefore chapter, is called a "clear triumph" is largely believed to be because of its peaceful nature.