Muharram (lit. 'sacred') is the first month of the Islamic calendar, with (at most) thirty days. Warfare in Muharram is forbidden, and it has been so since before the advent of Islam.[1] The word Muharram is short for "Muharram Safar" (lit. 'sacred Safar'), which distinguishes in the ancient Arab calendar between Safar I, which was sacred, and Safar II, which was not. Over time, however, the adjective Muharram itself became the name of the first month of the year.[1]