One legacy basic tasks to the Muslims by the Prophet was Jihad. This word comes from the Arabic root y-h-d, whose basic significance is commitment or effort. Used often in classic texts with the closely related meaning of fight, and therefore also of struggle. Often cited in the Koran: strive in the path of God. According to Islamic law, it is lawful to do the war against four types of enemies: infidels, apostates, rebels and bandits. Although the four types of war are legitimate, only the first two are counted as Jihad.
Thus, Jihad is a religious obligation. To define the obligation of holy war, Muslim jurists distinguish between offensive and defensive war. In the offensive, Jihad is an obligation of the Muslim community as a whole, and therefore they can meet it both volunteers and professionals. In a defensive war, it becomes obligation for all healthy individuals. It is this principle that Osama Bin Laden called in their Declaration of war against the United States. In the Muslim tradition, the world is divided into two houses: the House of Islam (Dar al – Islam), which dominate the Muslim Governments and prevails the Muslim law, and the House of war (Dar al – Harb), the rest of the world, still inhabited and dominated by infidels. Jihad will continue, only interrupted by truces, until the world embrace the Muslim faith or otherwise subjected to your domain.
Those who are fighting in the Jihad are entitled to receive rewards in both worlds: riches in this and paradise in the next. Statements of the Prophet and the Qur’an make reference to this subject in various opinions, for example: Jihad is your duty under any ruler, whether divine or evil. One who dies without having taken part in a campaign is as if he died in the lack of faith. Paradise is in the shadow of swords. Learn how to shoot, because the space between the Archer and the White is one of the gardens of paradise.