- Sufism (Arabic: الصُّوفِيَّة aṣ-ṣūfiyya), also known as Tasawwuf (التَّصَوُّف at-taṣawwuf), is a mystic body of religious practice found within Islam which is characterized by a focus on Islamic purification, spirituality, ritualism, asceticism, and esotericism. It has been variously defined as “Islamic mysticism”, “the mystical expression of Islamic faith”, “the inward dimension of Islam”, “the phenomenon of mysticism within Islam”, the “main manifestation and the most important and central crystallization” of mystical practice in Islam, and “the interiorization and intensification of Islamic faith and practice”.