Local rulers, politicians, bureaucrats, and writers in Iran after Islam played an important role in preserving Iranian heritage, traditions, and culture. These people, commonly known as Diwanids (officials), have played as mediators between kings and society, and their ideas have been known as Iranshahri thought. In Safavid period, the Diwanids and writers were known as Tajiks and Iranians and their patriotism was due to their Persian-language, lineage, and support for Iranian culture. The behavior of the Tajik class and writers is freedom, liberty, happiness, esotericism, and the pursuit of moral perfection, collectively known as the “ immensity of manner” (Wos’ at Mashrab) which had been the discourse of intellectuals in the period of the 16th and 18th centuries in Safavid history. This discourse helps us to find the causes of some cultural and social issues of that time such as national reconciliation, collective morality, elite migration, and so on. In this study, we have expressed the important structures of immensity of manner discourse, analyzed its Iranian foundations, and by reviewing the beliefs and behaviors of the Tajik agents of the Safavid government, identified and presented the immensity of manner discourse in their behavior. The method used to distinguish Persian cultures and identity was based on the “ Turk and Tajik” binary opposition in the Safavid period, which was extracted from historical texts. Therefore, in order to identify the so-called Tajik group, which is the supporter of Iranian culture and identity, we have paid attention to the Turkish-Tajik confrontation in historical sources.