This article aims to study Sufism (taṣawwuf) and inspiration (ilhâm), which is the main means of the mystical knowledge, in the thought of Ibn Taymiyya who is known generally as an exponent of a tradition grounded on the understanding of Salaf. He is considered by majority to be a rigid opponent of Sufism because of his unconventional interpretations of Sufi terminology. Also, since Ibn Taymiyya constantly offers the Qur’ān, ḥadīth, and the opinions of Salaf as the base of religious knowledge, (...) the idea that he does not lean toward inspirational and rational knowledge and he does not give a place for them in his epistemology came out and has grown in the course of time. As a result of our research, however, we realize Ibn Taymiyya admits the epistemological value of inspiration along with Sufism conditionally. While he divides Sufism into Early and Later periods, he examines inspiration in the context of knowledge (bâb al-ʿilm) which is considered to be a subcategory of supernatural events. Ibn Taymiyya, who believes that inspirational knowledge must be tested by means of the Qur’ān, Sunna, and the opinions of Salaf, without rejecting its reality, assesses the subject matter in detail through his own criteria. Therefore, this article, in which the subject is elaborated critically and descriptively, focuses on the approach of Ibn Taymiyya to Sufism and inspiration that is the basic element of Sufi knowledge. (shrink)