grand ayatollah sheikh hossein vahid khorasani (; born mohammad-hossein molla-saleh (persian: )‎; 1 january 1921) is an iranian writer and shia marja'. he was born in nishapur, iran. he is the head of the qom seminary. khorasani is said to be the most learned shia religious figure. his lectures and quotes have been used against the thinking of the supreme leader of iran.