[1] He is largely credited with being the first to delineate and define the Six Books of Sunni Islam after the Qur'an,[2][3][4] and the first person to include Sunan Ibn Maja as a canonical work.
He spent much of his life in Hamedan, in present-day Iran, where he wrote a number of respected works in his chosen field of study and gained wide renown for his scholarship and contributions.
[7] Ibn Tahir died in Baghdad on a Friday while returning from another pilgrimage at Mecca, which he had performed multiple times during his life.
Ibn Khallikan records the date as 28 Rabi al-awwal in the Hijri year 507, reckoned by de Slane as September 1113 Gregorian.
Ibn Tahir was also noted for his work in bibliographic indexing and biographical dictionaries, fields in which he is considered an important early figure.