Tintin au pays de l'or noir
In "Land of Black Gold", he is shown allied with Dr. Müller and his Skoil Petroleum Company and fighting a guerrilla war against Ben Kalish Ezab, the Emir. Bab El Ehr's men mistake Tintin for a weapons smuggler working for the sheikh, and rescue him from Ben Kalish Ezab's soldiers. After discovering the mistake, Bab El Ehr accuses Tintin of being a spy for the Emir and makes him a prisoner. Tintin collapses from thirst after a long march on foot through the desert, and is left behind by Bab El Ehr.