This work gives a particular reference to Abu al-Qasim al-Qushayri, the author of the Sufi work, Al-Risalah, who wrote a complete commentary of the Qur'an, which is regarded as the first 'mystical' commentary, a fusion of Shariah and Tariqah that bridged the sometimes frictitious ties between sufis and ulama. The author studies the history of this tafsir, the science of Qur'anic tafsir and its development, aiming to show how Sufi scholars too have given a new life to the interpretation of the Qur'an.