The Tebyan exegesis is one the fifth century commentaries, written with a theological approach. Tusi's endeavour for strengthening Shiite tenets in it, verifies his focus on this issue. The rather priority of theology compared to other sciences in Tusi's era and current dogmatic debates, along with the authoritative status of prominent Shiite scholars such as Sheikh Mufid, Seyyed Murteza and Sheikh Tu si himself all had great influence on this commentary. The vast narration of the Mutazili views such as those of Abu Ali Jubayi, Rummani, Balkhi, Ka'bi and Muhammad Bahr Isfahani fulfilled this end. Both for the rational methodology of Muhammad Bahr Isfahani and Rummani and for the dogmatic principles common with Mutazila, Tusi has preferred the Mutazili's opinions and narrated them. Although in quite a few occasions has also criticized their believes and negated them.
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