Masjid Quba' is located on the outskirts of Madina in Saudi Arabia,and is the oldest mosque in the world. Its first stones were positioned by the Prophet Muhammad (peace be upon him) on his emigration from the city of Mecca to Medina and the mosque was completed by his companions.
According to tradition, offering two
rakaʿāt of
nafl prayers in the Quba Mosque is equal to performing one
Umrah. Quba Masjid is the first mosque built in the history of Islam and was built as soon as Muhammad (peace be upon him) arrived on the
Hijra.
Muhammad (peace be upon him) used to go there, riding or on foot, every Saturday and offer a two rak'ah prayer. He advised others to do the same, saying, "Whoever makes ablutions at home and then goes and prays in the Mosque of Quba, he will have a reward like that of an 'Umrah." This
hadith is reported by Ahmad ibn Hanbal, Al-Nasa'i, Ibn Majah and Hakim al-Nishaburi.