The main purpose of the article is to shed light on the life and scientific activity of Zafar Ahmad Tahonavi (d. 1394/1974), a mature scholar from India, Hanafi scholar, and his books, especially the work Ela al-Sunan. Also, the general characteristics of the period in which he lived will be considered, and information will be given about the cultural life that prevailed in the country. In this work, it was found that he gave refutations to groups named Ahli Hadith. In addition, it contains the positive opinions of Zafar Ahmad Tahonaviy and his works from different countries of the world.