The "Constitution of Medina" - Muhammad's First Legal Document

The ‘Constitution of Medina’ is probably the first legal document of Mu?ammad and dates back to the first year after his hijra (622 CE), or “emigration”, which brought him from his hometown Mecca to the cluster of towns known as Yathrib or Medina in the Hijaz (northern Arabia) and marked the beginning of the Islamic era.