The Battle Hostile_encounter of Tawahin ( , `` Battle Hostile_encounter of the Mills '' ) was fought Hostile_encounter in 885 between the forces of the Abbasid Caliphate under Abu ' l-Abbas ibn al-Muwaffaq ( the future Caliph al-Mu'tadid ) and the autonomous Tulunid ruler of Egypt and Syria , Khumarawayh .

Following Khumarawayh 's ascension Change_of_leadership to power in 884 , the Abbasid central government decided Deciding to reassert Recovering its control Control over the provinces ruled by him and invaded Attack northern Syria that year .

By early 885 the conflict Hostile_encounter was proceeding favorably for the Abbasids , forcing Causation Khumarawayh to personally take Conquering the field and try to stop Preventing_or_letting their advance Self_motion toward Egypt .

In the battle Hostile_encounter that followed , the Abbasid troops initially defeated Conquering the Tulunids and plundered Robbery Khumarawayh 's camp , but were then ambushed Attack by a Tulunid reserve force and routed Destroying in turn .

In the following year the Abbasid government agreed Agree_or_refuse_to_act to a treaty Sign_agreement which formally recognized Agree_or_refuse_to_act Khumarawayh 's rule Control over both Egypt and Syria .