Allah has ordained twelve months in one year. This has been Allah's Ordinance since the day He created the heavens and the earth. Four of these Months are Sacred, forbidden for all warfare. (Mankind, through international treaties, must agree to shun all kind of warfare during these four months. This will give them a cooling off period that sense may prevail over emotions). This is the Firm Religion, the right way. So, do not wrong yourselves by fighting during the Sacred Months. However, you may fight the idolaters in any or all these months if they fight against you in any or all of them (2:194). And know that Allah is with those who restrain themselves. (Four Sacred Months: (2:194), (9:1-5)).