Nasr demanded the loyalty of all of the Zawaya, forcing every Zawaya leader to swear allegiance to him. His government was composed of himself, a Vizier, and 4 Qadi's, and tasked itself with enforcing order in the southern Sudan; known as Qibla. Nasr set himself the goals of fighting those who neglected Islam and oppressed Muslims, uniting the various groups of the region in a single state, and creating a new and divinely guided order. In 1673 Nasir al-Din began his jihad by invading Futa Tooro and the various Wolof states beyond the Senegal river. By focusing on the states south of the Senegal Nasr avoided an early confrontation with the powerful Hassan. Nasr's focus on these states also gained him control of the entrepôts for the gum trade along the Senegal. French trade on the Senegal had seen large growth since the beginning of the century, and thus control of the entrepôts strengthened Nasr financially, whilst offsetting the Hassan control of the trade to the ports on the Saharan coast. Nasr then turned his attention to strengthening the rule of his Islamic state, and imposed the zakat on the tributary tribes north of the Senegal river. One of these tributary tribes; Bubba, called on Hadi, the Emir of Trarza, to help him resist Nasr ad-Din. Tradition maintains that the war between Nasr ad-Din and Trarza broke out as a result of the Bubba's call for help from Trarza, resulting in the war being called Shurbubba, or "the war of Bubba." The Hassan were united in their opposition to Nasr. Most of the burden of fighting fell to the Emirate of Trarza, although the Emirate of Brakna sent Trarza reinforcements and helped immobilise Zawaya in their own regions to prevent them from joining the forces of Nasr. Most Zawaya of the Southern Sahara sided with Nasr, although some remained neutral, and others supported the Hassan, with a Zawaya scholar from Shinqit issuing a fatwa against Nasr, stating that he was not a Caliph and had no right to impose the zakat. This fatwa led to Hãdi, the Trarza chief, sending troops to seize animals that had already been sent as zakat. The ensuing conflict saw the forces of Nasr and those of Hãdi clash in three battles; the first near the port of Portendick and the second near the salt mines of Awlil positioned just north of the mouth of the Senegal river.