The Hadith Written on the Roof Here

This hadith inscribed on the outer facade or roof section of the Prophet's Mosque serves as an important warning sign that informs all visitors of the mosque's virtue: 'The prayer offered in my mosque is better than a thousand prayers offered in other mosques, except for the Masjid al-Haram.' (صَلاَةٌ فِي مَسْجِدِي هَذَا أَفْضَلُ مِنْ أَلْفِ صَلاَةٍ فِيمَا سِوَاهُ إِلَّا الْمَسْجِدَ الْحَرَامَ) This hadith is one of the most important narrations in which the Prophet Muhammad explicitly expresses the unique virtue of the Prophet's Mosque. The Prophet's Mosque, which is among the three holy mosques along with the Masjid al-Haram and the Al-Aqsa Mosque, according to this narration, grants rewards a thousand times greater than all other mosques. The inscription of this hadith on the outer surface of the Prophet's Mosque is both a magnificent work of the Ottoman calligraphy tradition and a spiritual invitation to every visitor who will enter or wander around the mosque. [Source: Muslim, Hajj 505; Bukhari, Fada'il al-Madina 1; TDV Islamic Encyclopedia, 'Prophet's Mosque' article, islamansiklopedisi.org.tr/mescid-i-nebevi]