Although Abu Ḥamid Muḥammad Ibn Muḥammad al-Tūsī al-Ghazālī (450–505 AH) is not considered one of the leading mystics, he is among the staunchest defenders of mysticism, having formulated mystical concepts before Ibn ʿArabī. Khājeh Aḥmad Yasawī (423–562 AH) is also one of the most prominent figures of Sufism (Taṣawwuf) and mysticism (ʿirfān) in Central Asia and the founder of a particular school in Sufism known as the Yeseviye sect. Despite their differences in language, environment, and culture, studying the works of these two contemporary figures reveals notable similarities in their mystical outlooks. Moreover, explaining their differences and comparing their perspectives can provide a solid foundation for scholarly research in this field. This study seeks to examine the mystical viewpoints of these two figures based on the Kīmīā-ye Saʿādat (The Alchemy of Happiness) and Divān-e Ḥekmat (The Book of Wisdom) within the framework of comparative literature. The research employs a descriptive-analytical method using library sources, incorporating content analysis as well. The necessity of comparative literary studies between Iran and Central Asia underscores the importance and relevance of this research, and its main outcome is to highlight mystical asceticism with a focus on shariʿa as the foundation of the mystical thought of al-Ghazālī and Yasawī. The study also finds that Yasawī leans more toward mystical aspects and observations (mushāhedāt) than al-Ghazālī, and linguistically, he employs simpler language in his poems to communicate his ideas more effectively.