One part refers to parts of the Quran that reference historical events, which Quranists believe may require historical studies or hadith (although they believe even solely historical hadith should not be trusted completely) for better understanding. The other part involves the rest of the Quran which according to Quranists, forms the basis of Islam and can be understood without any reference to hadith. As a result, in matters of faith, jurisprudence, and legislation, Quranists differ with Sunnis and Shias who consider the Hadith, scholarly opinions, the opinions of the sahaba, ijma and qiyas Islam’s legislative authority in matters of law and creed in addition to the Quran.[23][24] Each hadith-espousing sect of Islam has its own distinct collection of hadith upon which its Muslims rely, but they are rejected by other sects,[25] while the Quranists reject all of the differing collections of hadith and have none of their own.[4][26][27] This methodological difference has led to considerable divergence between Quranists and Sunnis and Shia in matters of theology and law as well as understanding of the Quran.[17][28] Quranists claim that the Sunni and Shias have distorted the meaning of the verses to support their agendas.[29][9]