What did Muslims disagree over after Muhammad's death?

After Muhammad's death in 632 CE, Muslims primarily disagreed over the rightful successor to lead the Muslim community. This disagreement led to the split between Sunni and Shia factions, with Sunnis believing that the leader should be elected from among the community, while Shia Muslims believed that leadership should remain within Muhammad's family, specifically favoring Ali, his cousin and son-in-law. Additionally, debates arose over the interpretation of Islamic teachings and governance, further deepening the divide.