Abu 'l-Jaysh Khumārawayh ibn Aḥmad ibn Ṭūlūn (864 – January 18, 896) is a son of the founder of the Tulunid dynasty, Ahmad ibn Tulun.
His father, the autonomous ruler of Egypt and Syria, designates him as his successor.
When Ibn Tulun dies in May 884, Khumarawayh succeeds him, and after defeating an attempt to depose him, in 886 he manages to gain recognition of his rule over Egypt and Syria as a hereditary governor from the Abbasid Caliphate.
The agreement is renewed In 893 with the new Abbasid Caliph, al-Mu'tadid, and sealed with the marriage of his daughter Qatr al-Nada to the Caliph.
At the height of his power, Khumarawayh's authority expanda from the Byzantine frontier in Cilicia and the Jazira to Nubia.
Domestically, his reign is marked by a prodigal squandering of funds on extravagant displays of wealth, construction of palaces, and patronage of artists and poets.
In combination with the need to maintain a sizeable professional army and guarantee its loyalty through rich gifts, the treasury is left empty by the end of his reign. Khumarawayh is murdered by a palace servant in 896, and is succeeded by his son Jaysh, who is deposed after a few months in favor of another son, Harun ibn Khumarawayh.
The Tulunid state enters a period of turmoil and weakness, which culminates in its reconquest by the Abbasids in 904–905.
