Ibn Tahir of Caesarea

Abu al-Fadl Muhammad bin Tahir bin Ali bin Ahmad al-Shaibani al-Maqdisi, commonly known as Ibn Tahir of Caesarea ("Ibn al-Qaisarani" in Arabic), was a Muslim historian and traditionist. He is largely credited with being the first to delineate and define the six canonical works of Sunni Islam after the Qur'an, and the first person to include Sunan ibn Majah as a canonical work.
Life
Ibn al-Qaisarani was born in Jerusalem in the year 1057 to an Arab family originally from Caesarea, hence his name. Because of the Arabic name for Jerusalem being "Bait al-Maqdis," he was often nicknamed "Maqdisi" or the man from Jerusalem instead. His birth date is recorded by Ibn Khallikan as 6 Shawwal in 448 on the Islamic calendar, which William McGuckin de Slane reckoned as December of 1056 on the Gregorian calendar.
Ibn al-Qaisarani traveled extensively in search of hadith, or narrations and reports, from the Muslim prophet Muhammad. He began learning hadith...