Ihsan Abbas was a Palestinian professor at the American University of Beirut, and was considered a premier figure of Arabic and Islamic studies in the East and West during the 20th century. The "author of over one hundred books", during his career, Abbas was renowned as one of the foremost scholars of Arabic language and literature and was a respected literary critic. Upon his death, Abbas was eulogized by University College London historian Lawrence Conrad as a custodian of Arabic heritage and culture, and a figure whose scholarship had dominated the Middle East's intellectual and cultural life for decades.

The Kharijites were an Islamic sect which emerged during the First Fitna (656–661). The first Kharijites were supporters of Ali who rebelled against his acceptance of arbitration talks to settle the conflict with his challenger, Mu'awiya, at the Battle of Siffin in 657. They asserted that "judgment belongs to God alone," which became their motto, and that rebels such as Mu'awiya had to be fought and overcome according to Qur'anic injunctions. Ali defeated the Kharijites at the Battle of Nahrawan in 658, but their insurrection continued. Ali was assassinated in 661 by a Kharijite dissident seeking revenge for the defeat at Nahrawan.