 His türbe, a popular destination for Muslim pilgrims, lies next to the mosque, which is also named after him.At the beginning of the sixteenth century there were quarrels between Sultan Selim I and Şeih Çelebi, since the sultan wanted to pull down part of the monastery to build the Topkapı Palace.He died in 1559 and his wife Safiye Hatun were both buried in a türbe in the yard of the mosque, near the türbe of Mustafa Pasha.