Muḥarram (Arabic: ٱلْمُحَرَّم‎) is the first month of the Islamic calendar. The general meaning of the adjective 'haiiharram means "banned, barred, forbidden, illegal, illicit, impermissible, prohibited, unlawful, unauthorised, unpermitted". It is one of the four sacred months of the year during when warfare is forbidden. It is held to be the second holiest month, after Ramaḍān. The Tenth day of Muharram is known as the Day of Ashura.