The Sword of Osman (Ottoman Turkish: ; Turkish: Osman'?n K?l?c?) was an important sword of state used during the enthronement ceremony (Turkish: K?l?ç alay?) of the sultans of the Ottoman Empire. The sword was named after Osman I, founder of the Ottoman Dynasty.
The girding of the Sword of Osman was a vital ceremony and took place within two weeks of a sultan's ascension to the throne. The practice started when Osman I was girt with the sword of Islam by his mentor and father-in-law Sheikh Edebali. The girding was held at the tomb complex at Eyüp, on the Golden Horn waterway in the capital Constantinople. Even though the journey from Topkap? Palace (where the sultan resided) to the Golden Horn was short, the sultan would board a boat amid much pomp to go there. The Eyüp tomb complex was built by Mehmed II in honour of Abu Ayyub al-Ansari, a companion of Muhammad who had died during the first Muslim Siege of Constantinople in the 7th century. The sword girding thus occurred on what was regarded as sacred grounds and linked the newly-enthroned sultan to his 13th-century ancestors and to Muhammad himself.
O fato de que o emblema pelo qual um sultão foi entronizado consistia de uma espada era altamente simbólico. Mostrou que o escritório com o qual ele foi investido era, antes de tudo, o de um guerreiro. A Espada de Osmã foi cintada no novo sultão pelo Sharif de Konya, um dervixe Mevlevi , que foi convocado para Constantinopla para esse fim. Tal privilégio foi reservado aos homens desta ordem sufi desde que Osman eu tinha estabelecido sua residência em Sögüt em 1299, antes da capital ser transferida para Bursa, depois para Edirne e mais tarde para Constantinopla.
Until the late 19th century, non-Muslims were banned from entering the Eyüp Mosque and witnessing the girding ceremony. The first to depart from that tradition was Mehmed V, whose girding ceremony was open to people of different faiths. Held on 10 May 1909, it was attended by representatives of all the religious communities present in the empire, notably the Sheikh ul-Islam, Greek Patriarch, the chief rabbi and a representative of the Armenian Apostolic Church. The fact that non-Muslims were allowed to see the ceremony enabled The New York Times to write an extremely-detailed account of it. Mehmed V's brother and successor, Mehmed VI, whose girding ceremony was held on 4 July 1918, went even further by allowing the ceremony to be filmed. Since he was the last reigning Ottoman sultan, that is the only such ceremony that was ever put on film. The Sword of Osman is held in the Imperial Treasury section of Topkap? Palace.