Shāh Chérāgh () or Shahcheragh Shrine is the tomb of Ahmed bin Musa (Imam Reza's brother) in the center of Shiraz. It is the third most important shrine in Shia Islam in Iran, after the Imam Reza shrine and Fatima Masumeh Shrine. Ahmed bin Musa traveled to Khorasan on the way to join his brother, but he was killed by Al-Ma'mun Abbasid Caliphate in Shiraz. Shāh-é-Chérāgh is a Persian term for "King of the Light". The site is the most important place of pilgrimage within the city of Shiraz. Overview The tombs became celebrated pilgrimage centres in the 14th century when Queen Tashi Khatun erected a mosque and theological school in the vicinity. The site was given this name due to the nature of the discovery of the site by Ayatullah Dastghā'ib (the great grandfather of the contemporary Ayatullah Dastghā'ib). He used to see light from a distance and decided to investigate the source. He found that the light was being emitted by a grave within a graveyard. The grave that emitted the light was excavated, and a body wearing an armor was discovered. The body was wearing a ring saying al-'Izzatu Lillāh, Ahmad bin Mūsā, meaning "The Pride belongs to God, Ahmad son of Musa". Thus it became known that this was the burial site of the sons of Mūsā al-Kādhim. History The site is the most important place of pilgrimage within the city of Shiraz. Ahmad came to Shiraz at the beginning of the third Islamic century (approximately 900 AD), and died there. During the rule of Abu Bakr ibn Sa'd () of the Salghurid dynasty, the chief minister to the monarch by the name of Amir Muqarrab al-Din Mas'ud built the tomb chamber, the dome, as well as a colonnaded porch. The mosque remained this way for roughly 100 years before further work was initiated by Queen Tash Khātūn (the mother of Shāh Abū Ishāq Injū) during the years 1344–1349 (745–750 AH). She carried out essential repairs, constructed an edifice, a hall of audience, a fine college, and a tomb for herself on the south side. She also presented a unique Qur'an of thirty volumes, written in golden thuluth characters with gold decoration, in the style of the calligraphist of that period, Yahya Jamali. The date written on the Qur'an indicates that they were written from 1344–1345 (754–746 AH). Nothing now remains of the buildings set up