In order to organize relations between the inhabitants of Madina, the Aus, Khazraj, emigrants, and Jews and(Muhammad)the Prophet the ruler of al-Madina, the Prophet proclaimed the document (al-Sahifah.) which has become known recently as "the constitution of al-Madina". This document was recorded in full by Ibn Hisham in his biography of the Prophet, and by Abu Ubayd al-Qasim Ibn Sallam in his Kitab al-Amwal while some historians and traditionists have transmitted partial quotations or merely mentioned it.
This document is authentic, and very important for understanding the early period of Islam in the view of historians and recent scholars.