In the last century, India has undoubtedly become an important center for the study of hadith, and the scholars of India have become well-known for their passion for religious knowledge. Upon them ended the era of leadership in teaching hadiths, codification of the special fields (funun) of hadith, and commentary upon its texts (mutun). Such was their mastery of this science that Muhammad Rashid Rida mentions in the introduction of his book Miftah Kunuz al-Sunna, “Were it not for the superb attention to detail in the science of hadith displayed by our brothers, the scholars of India in the present era, this science would have withered away in the eastern cities. And, indeed, mastery of this science has been waning in Egypt and Syria since the tenth century ah.” There is no doubt that Shaykh Muhammad Zakariyya was among the most distinguished hadith scholars of India and a great contributor in service of the Sunna. He was given the honorary title of Shaykh al-Hadith, or “Great Scholar of Hadith,” by his teacher, Shaykh Khalil Ahmad Saharanpuri, who recognized his deep insight, clear-sightedness, and extensive knowledge of hadith and related sciences.