Masjid al-Qiblatain, also known as the Mosque of the Two Qiblas, is a significant Islamic site located in Medina, Saudi Arabia. The mosque is historically important because it is associated with a notable event in the life of Prophet Muhammad (peace be upon him).

Before the event that took place at Masjid al-Qiblatain, Muslims used to pray facing towards Jerusalem as their qibla (the direction Muslims face during prayer). However, during the Dhuhr (midday) prayer, while the Prophet Muhammad was leading the congregation, he received a revelation from Allah instructing him to change the qibla from Jerusalem to the Kaaba in Mecca. This event is mentioned in the Quran in Surah Al-Baqarah (2:144).

As a result, during the prayer itself, the Prophet Muhammad turned to face the Kaaba, and those behind him also changed their direction of prayer immediately. This momentous event is commemorated at Masjid al-Qiblatain, where two mihrabs (prayer niches) are present—one facing Jerusalem and the other facing Mecca.

The mosque itself has a distinctive architecture, and its location holds great historical and religious significance for Muslims. Pilgrims and visitors often include Masjid al-Qiblatain in their itinerary when visiting Medina. The mosque serves as a reminder of the Prophet's obedience to the divine command and the significance of Mecca as the central point for Muslims' worship.