In the name of God the Compassionate the Merciful. Only they shall come into the mosque who believe in God, who believe in the Day of Judgement, who say their prayers, who give alms, and who fear only God. These will be on the path of righteousness. This [inscription] was completed in the month of God (i.e. Ramadan) Four hundred and ninety eight.There is also a pair of inscriptions on either side of the mehrab which read "In the name of God the Compassionate, the Merciful" and "The All-hearing, the All-Seeing"
The dome has ribbed vaulting reminiscent of that used in the Dome of Nizam ul-Mulk in the Masjed-e-Jomeh, which in turn was said to derive from the wicker tents used by the nomadic tribes which first occupied Iran.