 Harun al-Rashid became ill and died very soon after when he reached Sanabad village in Tus and was buried in Dar al-Imarah, the summer palace of Humayd ibn Qahtaba, the Abbasid governor of Khorasan.Due to this historical event, the Dar al-Imarah was known as the Mausoleum of Haruniyyeh.The location later became known as Mashhad ("The Place of Martyrdom") because of the martyrdom of Imam ar-Ridha in 818.