Seal of Muhammad

The Seal of Prophet Muhammad (Turkish: Muhammed'in mührü, Arabic: ختم الرسول, romanized: KḪatm ar-Rasūl) is one of the alleged relics of Muhammad kept in the Topkapı Palace by the Ottoman Sultans as part of the Sacred Relics collection. This seal is referred to as the Topkapı seal.

A second seal, of a different design, is the Muqwaki seal. It is the most popular design, used on several Jihadist flags such as the ISIS flag. It is the replica of a seal purportedly used by Muhammad on a letter addressed to al-Muqawqis. Scholars have determined the letter to be a literary forgery on palaeographic grounds.