Documents are considered one of the first important sources for the study of Islamic history, because they contain original historical material, and we mean in particular official papers, such as letters, publications, records, judicial rulings, financial systems, religious fatwas, political treaties, decrees and covenants for senior officials, including ministers, governors and pimps. Many of these documents, whether written in Arabic or otherwise, have been lost despite their great importance in the study of Islamic history, and perhaps the main reason for their loss and destruction is that the Islamic world, after it was a political unit until the end of the Umayyad era in the year 12 AH / 750 CE . He divided himself as a result of the emergence of conflicts between Muslims and religious intolerance among non-Muslims, which led to their loss or falsification, especially in the period of the separation of many regions from the Islamic state, as the first historical documents are still unknown to us, and only a few of them remain scattered and scattered in the books of the later . Researchers in Islamic history should not hesitate to search for them (documents) and publish them, and collect what was found in the books of later scholars because it is the main way to bring us to the right truth. We will try to study the historical document, which was attributed to Caliph Umar ibn al-Khattab at times and to his leader Abu Ubaidah ibn al-Jarrah at other times, and which was transmitted by Muslim and oriental jurists and historians, and they differed in its proportions. Whoever denies that Caliph Umar should issue such a document, especially since he was one of the most merciful of the Rightly Guided Caliphs to the Christians and other dhimmis. We have the best evidence for that in his statements and commandments. It was narrated from him upon his death that he said: (The caliph recommended after me the responsibility of the Messenger of God to fulfill their pledge to them and to fight behind them and not be overburdened).