Islamic Rules of Warfare
This extract only pertains to the conduct of war:
The Cairo Declaration on Human Rights in Islam
Adopted and Issued at the Nineteenth Islamic Conference
of Foreign Ministers in Cairo on 5 August 1990.
The Member States of the Organization of the Islamic Conference,
(a) In the event of the use of force and in case of armed conflict, it is not permissible to kill non-belligerents such as old men, women and children. The wounded and the sick shall have the right to medical treatment; and prisoners of war shall have the right to be fed, sheltered and clothed. It is prohibited to mutilate dead bodies. It is a duty to exchange prisoners of war and to arrange visits or reunions of the families separated by the circumstances of war.
(b) It is prohibited to fell trees, to damage crops or livestock, and to destroy the enemy’s civilian buildings and installations by shelling, blasting or any other means