Al-Baqarah 2:194

<h2>Fighting during the Sacred Months is prohibited, except in Self-Defense</h2><p>Ibn `Abbas, Ad-Dahhak, As-Suddi, Qatadah, Miqsam, Ar-Rabi` bin Anas and `Ata said, "Allah's Messenger ﷺ went for `Umrah on the sixth year of Hijrah. Then, the idolators prevented him from entering the Sacred House (the Ka`bah in Makkah) along with the Muslims who came with him. This incident occurred during the sacred month of Dhul-Qa`dah. The idolators agreed to allow them to enter the House the next year. Hence, the Prophet entered the House the following year, along with the Muslims who accompanied him, and Allah permitted him to avenge the idolators' treatment of him, when He said:</p><p>الشَّهْرُ الْحَرَامُ بِالشَّهْرِ الْحَرَامِ وَالْحُرُمَـتُ قِصَاصٌ</p><p>(The sacred month is for the sacred month, and for the prohibited things, there is the Law of equality (Qisas).)</p><p>Imam Ahmad recorded that Jabir bin `Abdullah said, "Allah's Messenger ﷺ would not engage in warfare during the Sacred Month unless he was first attacked, then he would march forth. He would otherwise remain idle until the end of the Sacred Months." This Hadith has an authentic chain of narrators.</p><p>Hence, when the Prophet was told that `Uthman was killed (in Makkah) when he was camped at the area of Al-Hudaybiyyah, …

The forbidden month for the forbidden month, and forbidden things in retaliation. And one who attacketh you, attack him in like manner as he attacked you. Observe your duty to Allah, and know that Allah is with those who ward off (evil).

The prohibited month for the prohibited month,- and so for all things prohibited,- there is the law of equality. If then any one transgresses the prohibition against you, Transgress ye likewise against him. But fear Allah, and know that Allah is with those who restrain themselves.

The sacred month is for the sacred month, and for the prohibited things, there is the Law of Equality (Qisas). Then whoever transgresses the prohibition against you, you transgress likewise against him. And fear Allah, and know that Allah is with Al-Muttaqun (the pious - see V. 2:2).

The sacred month for the sacred month; and sacrilege calls for retaliation. Whoever commits aggression against you, retaliate against him in the same measure as he has committed against you. And be conscious of God, and know that God is with the righteous.