Низам аль-Мульк
Although Mashhad owns the cultural heritage of Tus (including its figures like Nizam al-Mulk, Al-Ghazali, Ahmad Ghazali, Ferdowsi, Asadi Tusi, and Shaykh Tusi), earlier Arab geographers have correctly identified Mashhad and Tus as two separate cities that are now located about from each other.