Islam is a complete way of life that enlightens through the Qur’an and the Sunnah, the true path of guidance and success in this world and the hereafter. However, one must accurately comprehend what has been ordained through the Sunnah and identify the authentic hadiths of the Prophet (blessings and peace be upon him). To do that, it is imperative to understand the rules that govern the classification and definitions of hadith methodology and criticism.