The mosque that Prophet Muhammad ﷺ helped build after his migration to Medina; the second most virtuous mosque in Islam after the Sacred Mosque (Masjid al-Haram). Authentic hadiths report the greatly multiplied reward of praying here (Bukhari; Muslim). It contains the Sacred Chamber (Rawdah) and the Prophet's ﷺ resting place. (Source: TDV Encyclopaedia of Islam, "Mescid-i Nebevî")