Razi Estrabadi is one of the scholars who has shined in the sky of simplicity and good syntax by authoring her two famous works - Sharh Kafiyyah and Sharh Shafiyyah.
Undoubtedly, Nahj al-Balagha and the words of Imam Ali (AS) are after the Qur'an, which is the speech of the creator of languages, and after the hadith of the Prophet (PBUH), who is the messenger of the creator of speech and the most eloquent Arab. It is the best collection in which all the characteristics and attributes of a witness have been manifested due to the principles of narration. Razi Estrabadi, unlike most of Nahyoun, cites this valuable book in some cases to prove his claim.
Estrabadi's unique opinions that has made him stand out is the "syntactic agent theory". In other words; The only scientist who investigated this theory specifically and completely distinctly was Razi Estrabadi.
view of researcher Astarabadi, the elements of agent theory, in addition to the temporary and apparent aspects of syntax, include its structural, compositional and structural aspects - correlation, cause, cause, condition, pillar and reason - which relies on the semantic dimension of rules. He believes that the reason for the emergence of Arabic in one word are: creator (or the theological), agent (or the object) and place (or the noun).
Razi Estrabadi believes that the syntactic factor, in addition to the temporary and apparent aspect of the syntax, also includes the structural, compositional and structural aspect of the syntax - which includes the meaning -. He mentions the best arguments, which are unique in their kind, while prescribing the rules by referring to the words of Hazrat Amir, relying on the semantic aspect of the mentioned evidences