An Islamic state has a form of government based on sharia. As a term, it has been used to describe various historical polities and theories of governance in the Islamic world. As a translation of the Arabic term dawlah islāmiyyah (Arabic: دولة إسلامية) it refers to a modern notion associated with political Islam (Islamism). Notable historical examples include the first Islamic state in Medina, established by the prophet Muhammad, and the Arab caliphates which continued under his successors, such as the Rashidun and Umayyads.
The concept of the modern Islamic state has been articulated and promoted by ideologues such as Rashid Rida, Mullah Omar, Abul A'la Maududi, Ruhollah Khomeini, Israr Ahmed, Sayyid Qutb and Hassan al-Banna. Implementation of Islamic law plays an important role in modern theories of the Islamic state, as it did in classical Islamic political theories. However, most of the modern theories also make use of notions that did not exist before the modern era.
