Sheikh Saifeddin Boharzi (died in 1261) was a pupil of outstanding Khorezm Sufi Nadjm ad-Din Qubro (died in 1220). He chose Bukhara for preaching where founded famous "qubraviyyah" khanaka. Sheikh Boharzi converted Golden Horde's khan Berke into Islam. In the middle of the 13th century he headed Bukhara madrassah, established by Ma'sud-beg, Mongolian minister and Muslim. Sheikh was buried in Fatkhabad.The mausoleum above his tomb arose at the end of the 13th century. Dome building of khanaka with portal was buiit in the 14th century. Khanaka had been operating till the end of 18th century.