Ridda Wars (Abu Bakr Fight Against Zakat Rejecters)
The consultation takes different forms in different societies and scenarios. In the tribal society of the Arabs, it was the Quraysh who were supposed to be the leaders. They had been enjoying this office from the days pre-Islamic. Now the it was mandate of the tribes of Quryash to decide who would be their leader. The mandate to choose a leader was with Quraysh already. So they chose Abu Bakr and he was the legitimate leader of course. Then he decided according the the verse of Quran to fight those who denied to pay Zakat. The rebels were not only denying Zakat, but they were violating the established norm of not obeying the Qurayshid leader, whom the majority of the Arabs had accepted him their leader as per the established norm of Quraysh being the leaders.