Muslim ibn al-Hajjaj
Ibn al-Qaisarani traveled extensively in search of hadith, or narrations and reports, from the Muslim prophet Muhammad. He began learning hadith at the age of twelve and moved to Baghdad at the age of nineteen; after spending some time in Iraq, he returned to his hometown briefly before proceeding to perform the Muslim pilgrimage at Mecca. Eventually, he would travel and study throughout the Tihamah, the Hijaz, Syria, Egypt, Mesopotamia, Persia and Khorasan. 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. During his time in the East, he was a student of Khwaja Abdullah Ansari, and worked as a paid copyist for his hand-written editions of the collections of Muhammad al-Bukhari, Muslim ibn al-Hajjaj, Abu Dawood and Ibn Majah.