Chashma-Ayub belongs to esteemed 'places of trace' ('kadamjoi') left by saint persons. A legend says that Prophet Job (Ayub) once visited this place. An impact of his staff made a well ('chashma'). Its water is still pure and considered curative. Legends inform that a cultic construction existed here in the 12th century. Inscription on the portal says that today's construction was built in the time of Amir Temur. Characteristic feature of Chashma-Ayub is a conic dome, typical for Khorezm architecture of 13th-14th centuries. Probably, Khorezm masters brought to Bukhara by Temur were the builders of Chashma-Ayub.