Sunnism is the largest branch of Islam, representing about 85-90% of the Muslim population worldwide. Sunnis believe in following the teachings and practices of the Prophet Muhammad as recorded in the Hadith and the Qur'an. They emphasize the importance of the community in interpreting religious texts and making decisions. Sunnism is characterized by its acceptance of the first four caliphs, known as the Rightly Guided Caliphs, as legitimate leaders after the death of Muhammad. The main schools of thought within Sunnism include Hanafi, Maliki, Shafi'i, and Hanbali, each offering different interpretations of Islamic law and practice.