The Table Spread - 5:2
Believers! Do not disrespect the religious rites established by God, nor the holy month, nor the sacrifice, nor the wreaths that mark them, nor those who set out for the Holy House to seek the favor of their Lord. When you come out of Ihram, you may hunt. Do not become provoked and aggressive out of spite against a community that has turned you away from the Holy Mosque. Cooperate in goodness and virtue. Do not cooperate in evil and enmity. Listen to Allah. Allah´s punishment is severe.
Desecration of holy months:
The Repentance/9:36
The number of months in Allah´s Book on the day He created the heavens and the earth is twelve according to Allah. Four of them are sacred. This is the perfect religion; do not wrong yourselves in those months (by fighting). But if the idolaters fight you in a total war, then fight them in a total war. Know that Allah is with the righteous.
The Cow/2:217
"They ask you about fighting in the Holy Month. Say: "Fighting on it is a great sin. But to turn away from the way of Allah and to be ungrateful to Him and to the Holy Mosque and to drive out its people from it is a greater sin with Allah. For oppression and cruelty is a greater crime than killing."If they could, they would fight you until they turn you back from your religion. Whoever of you turns away from his religion and dies as an unbeliever, all that he did will be in vain in this world and in the Hereafter. They are the people of the Fire and will abide therein forever."
The Repentance/9:37
Changing the location of the Holy Months is the height of disbelief. The disbelievers are led astray by it. They make it lawful one year and holy one year in order to make it coincide with the number of months that Allah has made holy. Thus they violate the sanctity of the months that Allah has made holy. Their evil deeds look beautiful in their eyes. Allah does not guide the disbelieving people.