Among the syntactic views on the words' diacritic factor, there are two well-known theories called verbal and semantic theories. But other views also could be extracted in their works. the theory of Ta’liq, which originates from the views of Abdul Qahir Jorjani, is of particular importance. The strength of his view lies in scrutinizing syntactic issues as well as in transcending the theory of Ta’liq from the realm of syntactic correctness to technical and expressive realm; A view that relies on the complete correspondence of the relation of the words to each other with the intention of the speaker. The purpose of this study, in addition to introducing a variety of perspectives on the theory of agent and derivateive, is to interpret the theory of agent and derivative in the light of Jorjani’s theory of poetry, or rather, the Ta’liq theory. This study, using the descriptive analytical and research library method, first has extracted different views about agent and derivative, expressing the weaknesses of each theory; Then it has interpreted agent and derivative based on the theory of poetry and showed its weaknesses. Subsequently, the strength of this phenomenon in comparison with other common theories has been shown. In the end, we have concluded that, in addition to the two well-known verbal and semantic theories, other theories can be extracted from literature. But Abdul Qahir Jorjani's theory of Ta’ligh is more powerful than other common theories because it emphasizes the speaker's intention to relation of the sentence components together.