Muhammad ibn Rustam Dushmanziyar, also known by his laqab as Ala al-Dawla Muhammad, waiKakuyid dynasty in Jibal.

He wis nicknamed Pesar-e Kaku or Ibn Kaku, which means maternal uncle in the Deylami language, and is related to the Persian word kaka.

Muhammad dies in September 1041 after having carving out a powerful kingdom which includes western Persia, Jibal and Kurdistan.

However, these gains are quickly lost under his successors.