Sultan Mohammad and Sultan Ibrahim are two grandchildren of Imam Musa Kazim who are buried in Sadat region of Ferdows. The building of shrine belongs to Tymorid era and is still stable and constant and has maintained its glory despite passage of time and numerous earthquakes. Recently appeared painting decorations and tile-work dome with its high background confirm the belonging of this structure to Tymorid era. Porches around the yard have been always as restrooms for pilgrims. Shrines of these two Imamzadeh in Ferdows have been the main inns for pilgrims of Imam Reza [the eighth great Imam of Shiite] in history in addition to specific spiritual environments.