2:195 And spend in the way of Allah and let not your own hands throw yourselves into destruction. And do good; indeed, Allah loves the good-doers.
4:29 O you who believe, do not eat one another’s wealth unjustly; instead do business with mutual consent. And do not kill yourselves. Indeed, Allah is Most Merciful to you.
92:18 The one who gives his wealth, so that he may purify himself,
(According to Verse 92:18, someone purifies himself by giving his wealth. There is no mention of self-mutilation for purification. And according to Verse 24:5, those who repent after their sin and reform, God is Oft-Forgiving, Most Merciful)(In regard to Christianity, there is self-mutilation, in Mark 9:43-47 and Matthew 5:29-30, to avoid the whole body to go into Hell)(Allah knows best)
39:53 Say, "O My slaves, those who have transgressed against themselves, do not despair of the Mercy of Allah. Indeed, Allah forgives all sins. Indeed, He is the Oft-Forgiving, the Most Merciful.
21:107 And We have not sent you, except as a mercy for the worlds.
25:70 Except he who repents and believes and does righteous deeds, then for those Allah will replace their evil deeds with good ones. And Allah is Oft-Forgiving, Most Merciful.
5:38 And for the male thief and the female thief - cut off their hands as a recompense for what they earned as an exemplary (punishment) (nakalan) from Allah. And Allah is All-Mighty, All-Wise. 5:39 But whoever repented after his wrongdoing and reforms, then indeed, Allah will turn to him in forgiveness. Indeed, Allah is Oft-Forgiving, Most Merciful.
(Their hands are to be cut off by someone else, not by themselves. If they repent and reform, Allah will turn to him in forgiveness)(The root of “nakalan” is “Nun-Kaf-Lam”, and it means “desist; prevent; any punishment serving to give warning to others than the sufferer or that restrains the offender from repeating the offense”. So, such punishment can be understood as an example to avoid or a deterrence)(There is also mutilation in Judaism and Christianity, in Deuteronomy 25:11-12; the context is that woman is punished by cutting off her hand if she seizes in self-defense the private parts of someone who is not her husband)(Allah knows best)
See also: Which religion is moderate and which is extreme? Who are the radicals? Judaism vs. Christianity vs. Islam
See also: Is stoning supported in the Bible?
See also: Do non-Muslims oppress women?
See also: Is slavery allowed in Judaism and Christianity? Are sex slaves allowed in Judaism and Christianity?
See also: Is there “honor killing” in the Qur’an, as there is in the Bible?