Yasa'uri

The Yasa'uri were a tribal group in central Transoxiana, neighbouring the Barlas. They arose from the followers of the Chagatai prince Yasa'ur, killed in 1320.

The Yasa'uri gained influence in the Chagatai ulus in the mid-fourteenth century. In 1360 their chief Hajji Mahmudshah joined a Moghul invasion and raided Barlas lands. The Barlas and Jalayir counter-attacked; the young Timur sided with the Yasa'uri, but they were defeated. Timur later rose to power in the Chagatai ulus.