Al-Masjid al-Nabawi is a mosque in Medina, Al Hijaz where Prophet Muhammad (s) is buried. Second to Masjid al-Haram, al-Masjid al-Nabawi is the holiest mosque in the world of Islam which was built by Prophet Muhammad (s) in the first century after Hijrat; it was later expanded in different eras. The houses of Prophet Muhammad (s) and 'Ali b. Abi Talib (a) and Hazrat Fatima (s) were built next to this mosque, which were later added to the mosque. Al-Masjid al-Nabawi is among the most important shrines for Muslims, which is highly revered by Shiites.