This article examines the etymological, lexical-semantic, and functional-stylistic features of the terms nabiy and rasul, which belong to the creedal lexical layer of Riyozu-d-davla, a historical work by Muhammad Rizo Ogahiy, a prominent representative of the nineteenth-century Khorezm historiographical school. The study provides a comparative analysis of the Arabic root meanings (ر-س-ل and ن-ب-أ) and their terminological usage in Old Uzbek, thereby highlighting Ogahiy’s scholarly mastery in employing religious and didactic vocabulary.