Al-Khakim at-Termizi. “Hajj and its secrets” (Haj va asroruhu)- scientifically interpreted translation from Arabic. This work is one of the first works written on this topic and it is considered the primary source for studying the history of Hajj (Pilgrimage). This work is of great interest to specialists in the history of Islam and it is also widely used as handbooks in higher Islamic educational institutions