Chagatai language
"Tārīkh-i amniyya" ("History of Peace") was written in the Chagatai language—the old literary language of Central Asia, which can be thought of as an ancestral form of today's Uyghur and Uzbek languages. According to modern scholars, the Chagatai of Musa Sayrami's manuscripts had been influenced by "modern" Uyghur language (i.e., the vernacular of Sayrami's own era).