The language of the Gonbad manuscript is of a mixed character and depicts vivid characteristics of the period of transition from later Old Oghuz Turkic to Early Modern Turkic of Iranian Azerbaijan. However, there are also orthographical, lexical and grammatical structures peculiar to Eastern Turki, which shows that the original work was written in the area between the Syr Darya and Anatolia and later rewritten in Safavid Iran in the second half of the 16th century. It was later copied again in the same area in the second half of the 18th century during the Qajar dynasty.
