Mevlânâ was born on September 30, 1207, in the city of Balkh, one of the old Turkish cultural centers, today within the borders of Afghanistan. His real name is Muhammed Celâleddin. His grandfather, Hüseyin Hatibî, was one of the great scholars of his time. His father, Bahâeddin Veled, was known as "Sultânü'l Ulemâ" (Sultân of Scholars). Sultânü'l Ulemâ, an honest person who did not hesitate to speak to anyone, would say everything he knew right in his lessons and sermons without knowing any boundaries. Language is the symbol of being human. Language, which is the necessity of being human, the development of thought and emotion, indispensable of respect and love, is a legacy that nations inherited from the past to the present and the future. It is a known fact that individuals speaking the same language have the same background, culture and values, that is, a common destiny. Our expressions clearly carry the values, norms and social control elements, beliefs and traditions of our nation and play an important role in transferring the above-listed ones to future generations with the help of the language they are a part of. Mevlana has a very important place in the history of Turkish literature. In our study, there will be a language study on volume I based on the book "All Stories in Mesnevi" prepared by Mehmet Zeren. Based on the auxiliary verbs in the stories in the book, the idioms in the sentence will be determined. The idioms determined in the work, the number of lines and the number of pages will be determined. How often the author has used idiomatic word groups and will evaluate the meaning he adds to the sentence. Key words: Mevlana, Mesnevi, İdiom, Language Study