"Arab sources claim that it was a two day battle whereas Christian sources hold that the fighting clamored on for seven days. In either case, the battle ended when the French captured and killed Abd-er Rahman. The Moslem army withdrew peacefully overnight and even though Martel expected a surprise retaliation, there was none. For the Moslems, the death of their leader caused a sharp setback and they had no choice but to retreat back across the Pyrenees, never to return again."
Never say never.