Quranists date their beliefs back to the time of Muhammad, who they claim prohibited the writing of hadiths.[71][72][73] As they believe that hadith, while not being reliable sources of religion, can be used as a reference to get an idea on historical events, they point out several narrations about early Islam to support their beliefs. According to one of these narrations, one of Muhammad's companions and successor Umar, also prohibited the writing of hadith and destroyed existing collections during his rule as Caliph.[73] Similar reports claim when Umar appointed a governor to Kufa, he told him: "You will be coming to the people of a town for whom the buzzing of the Qur'an is as the buzzing of bees.