Hamza ibne Qahtabah, the Abbasid army commander who had led the war against the Ommayids was appointed by Mansur and Al-Mahdi, the Abbasid caliphs as the Governor of Khorasan. He made a big garden between Noughan and Sanadan and erected a palace which stood up to the beginning of the 4th century AH. Haroon, who had come to Tus to suppress the Khorasan rebellion, became ill and resided in the garden during his ailment. But he died in 193 H. And was buried inside the palace. Upon his tomb a shrine was built.
In 203 AH, Imam Al-Ridha, peace be upon him, was poisoned by Mamoun, the son of Haroon and Imam was buried alongside with Haroon. Since the martyrdom of Imam, his holy shrine became a place of pilgrimage for the world's Shias and the city spread so far as Noughan and Sanabad were annexed to it to become Mashhad Al-Ridha, shortened over time to Mashhad.
The holy shrine was ruined by Saboktakin, a Ghaznavid king. But his son, Sultan Mahmoud ordered the shrine to be repaired and expan...