Aḥmad Yasawī is one of the oldest and most famous Turkish shaykhs and mystics living in Central Asia in the fifth and sixth centuries of Islamic era. Among the people of Turkistan, he is known as Khwājā Aṭā Yasavī. His major compilation is Dīwāni Ḥikmat which covers all his mystical poems. However, during the collection of his mystical poems part of his dīwān was lost or with the passage of time some changes were done, and also some new poems that had the similar spirit and expression were added. Therefore, it has gradually lost its originality. However at the basis of all his mystical poems Aḥmad Yasawī belief and thought as well as the bases of his tarīqah (order) can be found. It is well-known that through his disciples (murīd), Aḥmad Yasawī's contributions and thoughts spread from Central Asia to the Balkans on the West via Anatolia, to the Arab world (particularly Bilād al-Shām) in South-West, and to the Persian lands up to the Northern part of India. However, recent modern scholars, particularly Muslims, generally have somehow neglected to study the important role that he played and examine his contributions. This article will try to analyze and bring some light on Aḥmad Yasawī's ideas as well as offer new comments on his understanding of Sufism and ṭarīqah (order).