[8] The pasha of Algiers attempted to dissuade him by inviting him to march against the Spaniards in Oran, Hassan Corso was given the command of an army composed of 5,000 musketeers, 1,000 spahis and 8,000 Kabyles brought by Abdelaziz.

[7][9] The Saadian prince then, against the instructions of his father, sent his troops to subjugate the tribes of the plains of Oran, however a group of the Beni Amer who were pursued by the Moroccans arrived at a camp in the Regency of Algiers and asked for help.

An army of 10,000 men, including 5,000 renegades and 2,000 Berbers from Little Kabylia, commanded by Abdelaziz, took charge of protecting Mostaganem from the Saadians, who were supported by the Spaniards.

The Saadian troops were surprised and defeated at a place called Abu Azoun river (or Rio Salado)[12] by the contingents of Hassan Pasha.

Abdelaziz El Abbes had killed the Saadian prince Moulay Abdelkader and cut off his head which was later taken to Algiers as a trophy and displayed in an iron cage above the Bab Azoun gate.

[9] Despite this defeat ash-Sheikh organised another expedition with his three sons in command of an army of 17,000 men to again attempt to annex the territory of the Regency of Algiers.

[18] After his defeat he welcomed with respect the ambassador of Salah Reis, Muhammad al - Kharrûbî, who negotiated the end of the conflict and confirmation of the border as the Moulouya river.