The phrase of "Hadithu Fulan" is a concept used during the report period. One of the people who used the concept in question remarkably is Tirmidhi. He uses aforementioned phrase in his Sunan in different ways. "La na?rifu illa min hadithi fulan", "Gharibun min hadithi fulan", "Asahhu min hadithi fulan", "Nahwu/Mithlu hadithi fulan", "Huwa/hadha hadithu fulan" are among these usages. In this article, we tried to determine in which mean Tirmidhi uses especially the phrase of "Huwa/hadha hadithu fulan" in his Sunan. As far as we determined, Tirmidhi uses this concept twenty-one times in his work for the narrators (ruwat) outside of companions. As a result of the research, it is understood that this phrase, which used for the muhaddithun in the category of tabi?in and mostly atba? al-tabi?in, refers to copies of hadith of muhaddithun in question and these copies were used by Tirmidhi.