Punishment of Apostasy in Islam
The majority of scholars in Islam stand for the punishment of an apostate. The following key passage in the Qur'an is used: ‘But if they turn renegades, seize them and slay them wherever ye find them; and (in any case) take no friends or helpers from their ranks; except those who join a group between whom and you there is a treaty (of peace) or those who approach you with hearts restraining them from fighting you as well as fighting their own people. (4:89-90). Other passages are used with an interpretation to punish apostates: 2:217; 3:72,90; 4:137; 5:54; 16:106.