Section (1)
As for the crucifixion mentioned, it consists of raising them upon a high place so that people may see them and their fate becomes widely known. According to the majority of scholars, this takes place after they have been killed. Others maintain that they are first crucified and then killed while upon the cross.
Some jurists have permitted them to be killed by means other than the sword. Some have even said that they should be left upon the elevated place until they die naturally (2), without being directly put to death.
As for mutilation in the course of killing, it is permissible only as retaliation in kind. Imrān ibn Husayn—may Allah be pleased with him—said: “The Messenger of Allah—may Allah bless him and grant him peace—never delivered a sermon to us without commanding us to give charity and forbidding us to mutilate.” (3)
Even when we kill disbelievers, we do not mutilate their bodies afterward, cut off their noses and ears (4), or slit open their bellies—unless they [أ/ق 33] have done the same to us, in which case we may do to them as they did to us. Yet refraining is better, as Allah, exalted is He, says: “(125) If you retaliate, then retaliate only in proportion to what was inflicted upon you; but if you remain patient, that is indeed better.” [al-Nahl: 126] It is said: