Sunni Muslims and Shia Muslims agree on the three holiest sites in Islam being, respectively, the Masjid al-Haram (including the Kaaba), in Makkah; the Al-Masjid an-Nabawi, in Medina; and the Al-Masjid Al-Aqsa, in Jerusalem.
Shia Muslims consider sites associated with Muhammad, his family members (Ahl al-Bayt), Shia imams and their family members to be holy. After the three holy cities of Islam (Makkah, Medina, Jerusalem), some of the most revered sites by Shias include Najaf and Karbala, in Iraq, and Mashhad and Qom, in Iran.[1][2]
Sardeg
was invoked but never defined (see the help page).