The Battle of Badr (Arabic: غزوة بدر‎), fought Saturday, March 13, 624 AD (17 Ramadan, 2 AH in the Islamic calendar) in the Hejaz region of western Arabia (present-day Saudi Arabia), was a key battle in the early days of Islam and a turning point in Muhammad's struggle with his opponents among the Quraish in Mecca. The battle has been passed down in Islamic history as a decisive victory attributable to divine intervention, or by secular sources to the strategic genius of Muhammad. It is one of the few battles specifically mentioned in the Qur'an. Most contemporary knowledge of the battle at Badr comes from traditional Islamic accounts, both hadiths and biographies of Muhammad, recorded in written form some time after the battle. Prior to the battle, the Muslims and Meccans had fought several smaller skirmishes in late 623 and early 624, as the Muslim ghazawāt (prophet-led battles) had become more frequent. Badr, however, was the first large-scale engagement between the two forces. Adva