Hodja Ishak is a Yesevi sheikh who lived in 14th century. He comes from Zangi lineage ancestors. He is the son of Yesevi sheikh Ismail Ata who is famous with his work of Óadìşatü’l-èÁrifìn “meşÀyiò-i TürkistÀn” and with his miracles. Óadìşatü’l-èÁrifìn is a Yesevì work that giving place to the various issues, expressing his miracles and warriors. The work consists of fifteen part that expressing participation to festal nights, tunes (places), to leave the superfluity things, endearment, mysticism, pleasure, service, firmament, allusion, discipleship, sheikhdom, diarrheas and spirits. Many of mystic’s words and rumours are transferred in this work. Óadìşatü’l-èÁrifìn is an important work because of both being the one of the oldest work of Yesevì tradition, giving detailed information and throwing a light on the first period of the Chagatai language