Question: Is it permissible to hijack planes, blow up buildings and carry out revolts [against the government]? Is this considered to be from the essence of Islaam that one loves to act upon? Benefit us, may Allaah reward you.
Answer: These affairs are from the destruction that Islaam prohibits, and it draws a lot of evil upon the Muslims because the non-Muslims make this a reason to attack the Muslims and annihilate them. It is these actions that the Kufaar have taken as grounds to dispraise Islaam as being a religion of terrorism, they say this because of such activities.
Islaam prohibits Bombings, destruction and hijacking planes because it causes harm to the Muslims before it does to other than them, and because it is a form of harm that does not contain any benefit.
[Shaykh Saalih ibn Fowzaan, al-Ijaabaat al-Muhimmah fil-Mashaakil al-Mudlahamah – page 81]