Muhammad al-Bukhari
To reduce the divergence, ash-Shafi'i proposed giving priority to the Qur'an and the Hadith (the practice of Muhammad) and only then look at the consensus of the Muslim jurists ("ijma") and analogical reasoning ("qiyas"). This then resulted in jurists like Muhammad al-Bukhari dedicating their lives to the collection of the correct Hadith, in books like Sahih al-Bukhari. Sahih translates as authentic or correct. They also felt that Muhammad's judgement was more impartial and better than their own.