أبو أيوب الأنصاري
The Eyüp Sultan Mosque () is a mosque situated in the Eyüp district of Istanbul, outside the city walls near the Golden Horn. The present building dates from the beginning of the 19th century. The mosque complex includes a mausoleum marking the spot where Abu Ayyub al-Ansari, the standard-bearer and friend of the Islamic prophet Muhammad, is said to have been buried.