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 Atabeg Abū Sa'id Zangi (~1130s AD) of the Zengid dynasty, the chief minister to the monarch by the name of Amir Muqarrab al-din Badr al-din built the tomb chamber, the dome, as well as a colonnaded porch. The mosque remained this way for roughly 200 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 by Queen Tash Khātūn, but the Qur'ans have remained and are preserved in the Pars Museum.