Torbat-e Heydarieh (Zava, Zaveh), Razavi Khorasan Province, Iran - The tomb of Qotboddin Heydar (Qutb ad-Din Haydar) (?-1221) a Persian Sufi saint and Malamati-Qalandari Sheikh, of possible Turkic origin. Haydar (the Persian form of his name is Heydar) founded an order of mendicant dervishes called as the Haydariyya known for their celibacy and self-mortification through piercing their own bodies with iron rings. His followers also wore felt and walked barefoot. He is also known by Heyder.