Abstract
The article analyzes the language of the written monument "Muqaddimat al-Adab," which is a valuable heritage in the study of the history of Turkic languages. The reconstruction of linguistic history is unattainable without written archives that document the state of a language across various historical epochs. A primary challenge in this field remains the scarcity of primary sources capable of reflecting the distinctive features, character, and essence of the language at each stage of its evolution. Consequently, it is imperative to examine the formation and development of the literary language in its integral relationship with the national language, dialects, and ancient scripts. Ancient written monuments serve as the most reliable evidence of the historical depth of a literary language; therefore, their systematic analysis remains a critical task for modern scholarship. A key objective is to determine the degree of continuity between medieval written sources and the modern language, as this facilitates tracing the trajectories of linguistic change, development, and consolidation. In this regard, research into both Old Turkic and modern Turkic languages, including Kazakh, is of paramount importance.