Mustafayev was awarded the title on 10 January 1944 for his leadership of a battalion in the capture of Fastiv.

Mustafayev retired from the army in 1954 and worked in senior positions in the party and government.

[3] He became a major and commander of the 91st Tank Brigade's motorized rifle and machine gun battalion, fighting on the outskirts of Stalingrad.

In January 1943, he was reportedly seriously wounded in the chest, but continued to fight until completely exhausted by blood loss.

The battalion captured Orekhov, Alexandrovka, Novoalekseevka, reportedly inflicting losses on German troops.

[1] Mustafayev returned to his tank brigade in the Kursk Bulge and became commander of its motor rifle battalion.

During fighting near Oryol he was awarded the Order of the Patriotic War 1st class for his actions on 30 July 1943.

On 10 January, Mustafayev was awarded the title Hero of the Soviet Union and the Order of Lenin[5][3] for his actions during the capture of Kiev, Fastiv, Berdychiv, and Zhytomyr.