Islam categorically rejects and condemns every form of terrorism.
It does not provide any cover or justification for any act of violence, be it committed by an individual, a group or a government. In fact according to Islam, no religion can sanction violence and bloodshed of innocent men, women and children in the name of God, since all religions came from God Who sent His prophets to create peace.
The word Islam literally means peace which is the antonym of terror and it is the obligation of every Muslim to uphold peace. This concept is so deeply rooted in Islam that the Holy Qur’an describes true Muslims as those who:
…walk on the earth in a dignified manner, and when the ignorant address them, they say, ‘Peace!’ [Holy Qur’an Ch.25: V.64]
The Holy Qur’an in fact champions the sanctity of life,
…whosoever killed a person – unless it be for killing a person or for creating disorder in the land – it shall be as if he killed all mankind; and whoso gave life to one , it shall be as if he had given life to all mankind. [Holy Qur’an Ch.5: V.33]
The same can be observed from the saying of the Holy Prophet(sa):
‘The biggest of Al-Kaba’ir (the great sins) are (1) to join others as partners in worship with Allah, (2) to murder a human being, (3) to be undutiful to one’s parents (4) and to make a false statement, or said, to give a false witness.’ (Ref. Bukhari, Vol. 9, Bk. 83, No. 10)
Furthermore, in his famous farewell sermon the Holy Prophet(sa) said,
‘…to take anyone’s life or his property or attack his honour is as unjust and as wrong as to violate the sacredness of this day, this month and this territory.’ (Siha Sitta)
This leaves no doubt that in Islam there is no justification whatsoever for terrorism.