This article aims to examine the essence of 'aql as kamāl al-awwal in Ibn Sīnā's philosophy. In this article, the author uses a qualitative research method with a descriptive-analytical and philosophical approach. This study found several important points which include: first, 'aql by Ibn Sīnā is defined as a potential of nafs insāniyyah or nafs nāṭiqah which helps humans to achieve knowledge and truth; secondly, the essence of 'aql for Ibn Sīnā is kamāl al-awwal, therefore it is immaterial and not material; third, the essence of 'aql as kamāl al-awwal makes it correlate with the nafs, rūḥ, and qalb which are human spiritual entities; fourth, 'aql as kamāl al-awwal also shows its potential as a tool to gain knowledge, where the process begins with the capture of phenomena through the five senses and then digested by 'aql and assisted in conceptualizing it through the emission of 'Aql Fa'āl; fifth, Ibn Sīnā's idea of the essence of 'aql may have been influenced by earlier Muslim philosophers such as al-Kindī and al-Fārābī, besides having undergone several explorations. In addition, he also succeeded in influencing later Muslim philosophers such as al-Ghazālī. is something that settles in life and appears in the action easily without the need of thinking first. Morals are not deeds, strengths, and knowledge. Morals are "Haal" or conditions of the soul and the inner shapeThis article aims to examine the essence of 'aql as kamāl al-awwal in Ibn Sīnā's philosophy. In this article, the author uses a qualitative research method with a descriptive-analytical and philosophical approach. This study found several important points which include: first, 'aql by Ibn Sīnā is defined as a potential of nafs insāniyyah or nafs nāṭiqah which helps humans to achieve knowledge and truth; secondly, the essence of 'aql for Ibn Sīnā is kamāl al-awwal, therefore it is immaterial and not material; third, the essence of 'aql as kamāl al-awwal makes it correlate with the nafs, rūḥ, and qalb which are human spiritual entities; fourth, 'aql as kamāl al-awwal also shows its potential as a tool to gain knowledge, where the process begins with the capture of phenomena through the five senses and then digested by 'aql and assisted in conceptualizing it through the emission of 'Aql Fa'āl; fifth, Ibn Sīnā's idea of the essence of 'aql may have been influenced by earlier Muslim philosophers such as al-Kindī and al-Fārābī, besides having undergone several explorations. In addition, he also succeeded in influencing later Muslim philosophers such as al-Ghazālī.Artikel ini bertujuan untuk mengkaji esensi ‘aql sebagai kamāl al-awwal dalam filsafat Ibnu Sīnā. Dalam artikel ini, penulis menggunakan metode penelitian kualitatif dengan pendekatan deskriptif-analitis-filosofis. Dalam penelitian ini ditemukan beberapa poin penting yang meliputi: pertama, ‘aql oleh Ibnu Sīnā didefinisikan sebagai suatu potensi dari nafs insāniyyah atau nafs nāṭiqah yang membantu manusia untuk mencapai ilmu dan kebenaran; kedua, esensi ‘aql bagi Ibnu Sīnā ialah kamāl al-awwal, oleh karenanya ia bersifat rohani bukan materi; ketiga, esensi ‘aql sebagai kamāl al-awwal menjadikannya berkorelasi dengan nafs, rūh, dan qalb yang menjadi entitas rohani manusia; keempat, ‘aql sebagai kamāl al-awwal juga menunjukkan potensinya sebagai alat untuk meraih ilmu pengetahuan, dimana prosesnya bermula dari penangkapan fenomena melalui panca indera dan selanjutnya dicerna oleh ‘aql dan dibantu mengkonsepsikannya melalui pancaran ‘Aql Fa’āl; kelima, gagasan Ibnu Sīnā tentang esensi ‘aql ini kiranya mendapat pengaruh dari filosof Muslim sebelumnya seperti al-Kindī dan al-Fārābī, disamping telah mengalami beberapa eksplorasi. Selain itu, dia juga berhasil mempengaruhi filosof Muslim setelahnya seperti al-Ghazālī
