810 July 21: Born in Bukhara (modern Uzbekistan), into a mixed Arab/Persian family.
821: Begins his studies of the words and works of Muhammad and the first Muslims, known as Sira.
826: Performs hajj, and begins journeys to several cities, searching for traditions.
842: Returns to Bukhara, beginning the compilation of the traditions.
846: Finishes his hadith collection.
870 August 31: Dies in Khartanak, near Bukhara.