اَللّٰھُمَّ صَلِّ عَلٰی مُحَمَّدِ نِ النَّبِیِّ الْاُمِّیِّ وَ عَلٰی آلِہٖ وَ صَحْبِہٖ وَ بَارِکْ وَ سَلِّمْ۔

Al-Masjid an-Nabawi (Arabic: المسجد النبوي, lit. 'The Prophetic Mosque'), known in English as the Prophet's Mosque, is a mosque built by the Islamic prophet Muhammad ﷺ in the city of Medina in the Al Madinah Province of Saudi Arabia. It was the second mosque built by Muhammad ﷺ in Medina, after Quba Mosque, and is the second largest mosque and second holiest site in Islam, both titles ranking after the Masjid al-Haram in Mecca. The mosque is located at the heart of Medina and is a major pilgrimage site that falls under the purview of the Custodian of the Two Holy Mosques.

Muhammad was involved in the construction of the mosque. At the time, the land of Al-Masjid an-Nabawi belonged to two young orphans, Sahl and Suhayl, and when they learned that Muhammad ﷺ wished to acquire their land to erect a mosque, they went to Muhammad ﷺ and offered the land to him as a gift; Muhammad ﷺ insisted on paying a price for the land because they were orphaned children. The price agreed upon was paid by Abu Ayyub al-Ansari, who thus became the endower or donor (Arabic: واقِف, romanized: waqif) of Al-Masjid an-Nabawi on behalf of, or in favor of, Muhammad ﷺ. al-Ansari also accommodated Muhammad upon his arrival at Medina in 622.

Originally an open-air building, the mosque served as a community center, a court of law, and a religious school. It contained a raised platform or pulpit (minbar) for the people who taught the Quran and for Muhammad ﷺ to give the Friday sermon (khutbah). Subsequent Islamic rulers greatly expanded and decorated the mosque, naming its walls, doors and minarets after themselves and their forefathers. After an expansion during the reign of the Umayyad caliph Al-Walid I, it now incorporates the final resting place of Muhammad ﷺ and the first two Rashidun caliphs Abu Bakr (R.A) and Umar (R.A) . One of the most notable features of the site is the Green Dome in the south-east corner of the mosque, originally Aisha's house, where the tomb of Muhammad ﷺ is located. Many pilgrims who perform the Hajj also go to Medina to visit (Ziyarah) the Green Dome.

A hadith inscribed in the mosque which says "A prayer in this mosque of mine is better than a thousand prayers anywhere else, except for Masjid al-Haram."
In 1909, under the reign of Ottoman Sultan Abdul Hamid II, it became the first place in the Arabian Peninsula to be provided with electrical lights. From the 14th century, the Mosque was guarded by eunuchs, the last remaining guardians were photographed at the request of Prince Faisal bin Salman Al Saud, and in 2015 only five were left. It is generally open regardless of date or time, and has only been closed to visitors once in modern times, as Ramadan approached during the COVID-19 pandemic in 2020.