The aim of the study is to find out Transcendental Epistemology by using Muta'aliyah Mulla Sadra. This study used qualitative research methodology. The result of the study is Mullâ Shadrâ system is different from the emphasis on specific aspects of "rationality" as it is now does not mean that its founder understands it as "irrational" nor is it given to "mystical experience". But the system...