In this research, Prof. İshak Emin Aktepe's work, The Concept of the Sunnah of Jurists in the
early ages, was introduced. The author deals with the definition of sunnah and the debates about
sunnah in the first and second centuries of Hijri, which were very influential in the formation of
Islamic thought. The author started his work with a few questions raised about the content of the
sunnah in the first century of Hijri. He brought up the questions reflecting the point of view of the
faqīh sects on sunnah and then discussed the principles on which the schools set out in making
judgments from the sunnah sources. “What is the place of the sunnah among the shar'i evidences?”
and “What is the relation of the Sunnah with other shar'i evidences?” are the questions he tried to
answer. Answers were sought to these questions in order to determine the notion of sunnah, its
content, judgment inference and ḥadīth criticism in the periods of the Messenger of Allah,
Companions, T ābiʿīn and later, according to Imām Abu Hanifa and Imām Malik. He gave special
importance to Imām Shāfiʿī, who laid the foundations of Ahl al-Ḥadīth, struggled in the way of Sunnah,
gave the k̲h̲abar al-wāḥid its shar'i position in the revelation, fought against the school of Iraq and
Ray and strengthened the Ahl-i ḥadīth against other schools. The author examined these issues in five
chapters, which he strengthened with ḥadīth, analysis and discussions. In the study, besides the works
of contemporary orientalist, Arab and Turkish researchers, classical sources were also cited. At the
end of each chapter, he included a comprehensive review summarizing her conclusions. This work is
considered one of the most important Turkish books investigating the historical development of the
concept of Sunnah in the first centuries.