Caring little, no doubt, for the interests of religion, he entered into negotiations with Youssouf- ben-Abdel-Rhaman, governor of Narbonne, and summoned the Mussulmans into Provence.

Youssouf lost no time in responding to the summons; and, from 734 to 736, the Arabs conquered and were in military occupation of the left bank of the Rhone from Arles to Lyons.

But in 737 Charles Martel returned, reentered Lyons and Avignon, and, crossing the Rhone, marched rapidly on Narbonne, to drive the Arabs from Septimania.

He succeeded in beating them within sight of their capital; but, after a few attempts at assault, not being able to become master of it, he returned to Provence, laying waste on his march several towns of Septimania, Agde, Maguelonne, and Nimes, where he tried, but in vain, to destroy the famous Roman arenas by fire, as one blows up an enemy's fortress.

A rising of the Saxons recalled him to Northern Gaul; and scarcely had he set out from Provence, when national insurrection and Arab invasion recommenced.
Charles Martel waited patiently as long as the Saxons resisted; but as soon as he was at liberty on their score, in 739, he collected a strong army, made a third campaign along the Rhone, retook Avignon, crossed the Durance, pushed on as far as the sea, took Marseilles, and then Arles, and drove the Arabs definitively from Provence.