The Treaty of Hudaybiyyah (Arabic: صلح الحديبية) was an event that took place during the formation of Islam. It was a pivotal treaty between the Islamic Prophet Muhammad, representing the state of Medina, and the Quraysh tribe of Mecca in March 628 (corresponding to Dhu al-Qi'dah, 6 AH). It helped to decrease tension between the two cities, affirmed a 10-year peace, and authorised Muhammad's followers to return the following year in a peaceful pilgrimage, later known as The First Pilgrimage.