Mustafa attended the Ottoman Military Academy at Constantinople (present-day Istanbul).
He was from the powerful Bilbaz Kurdish tribe. As chairman of the Ottoman Military Court also called the "war tribunal of Nemrut Mustafa", he condemned Mustafa Kemal to death in absentia along with closest associates, The warrant was also signed by Ali Kemal, Damad Ferid and the Sultan. Mustafa also sentenced Ebubekir Hazim (Tepeyran) the minister of the interior for aiding the Turkish nationalists.
He was dismissed from this office in June.
Mustafa was arrested by the kemalists, the British embassy intervened and secured him safe passage to Kurdistan, he left behind his palace in Constantinople which was taken over by the kemalists. His brother-in-law was Izzet Bey the former governor of Van and minister of Pious foundations under Tavfiq Pasha cabinet.
Mustafa"s son was Abdul Aziz Yamulki chief plotter of coup d"état against Bakir Sidqi government. Vice-governor of Bursa.