Does Quran say anything about beheading, stoning and hand-mutilation?
How effective they are in case of controlling crimes?
Aren't beheading, stoning and hand-amputation themselves crimes? Why not hang?
The quran orders certain punishments for those who sin the quran however does not say anything specifically about stoning or beheding. But it does include cutting the theives hand
the quran also put in the law of "an eye for an eye"
so if one did behead or kill somone, they may be beheaded as compnsation.
the quran doesent say anything on stoning, only about lashing the adulterers
stoning adulters came from hadith not quran stoning is the punishment for married adulters while lashing is for an unmarried adulterer
based on the links you provided i would say that they are effective. muslim contries where near the end of the list, while america always being at the top, the country with the least punishment for crime.
The hadd punishment for a thief is to cut off his hand. Allaah says (interpretation of the meaning):
Because cutting off the hand is a serious matter, cutting off the hand of the thief should not be done for just any case of theft. A combination of conditions must be fulfilled before the hand of a thief is cut off. These conditions are as follows:
The thing should have been taken by stealth; if it was not taken by stealth, then (the hand) should not be cut off, such as when property has been seized by force in front of other people, because in this case the owner of the property could have asked for help to stop the thief.
1- The stolen property should be something of worth, because that which is of no worth , has no sanctity, such as musical instruments, wine and pigs.
2- The value of the stolen property should be above a certain limit, which is three Islamic dirhams or a quarter of an Islamic dinar, or their equivalent in other currencies.
3- The stolen property should have been taken from a place where it had been put away, i.e., a place where people usually put their property, such as a cupboard, for example.
4- The theft itself has to be proven, either by the testimony of two qualified witnesses or by the confession of the thief twice.
5- The person from whom the property was stolen has to ask for it back; if he does not, then (the thief’s) hand does not have to be cut off.
If these conditions are fulfilled, then the hand must be cut off.
There is also similar punishments for Hiraabah. Hiraabah means ambushing people and threatening them with weapons and so on, in the deserts or in the cities, killing them, terrorizing them and seizing their property by force and openly. Hiraabah is one of the most serious of major sins, and it is forbidden according to the Qur’aan, the Sunnah and ijmaa’ (scholarly consensus)
The Qur’aan says (interpretation of the meaning):
Based on the above ayah, different punishment like killing, crucifying or cutting off hands and feet on opposite sides are implemented based on the severity and type of the crime by the ruler of the Islamic state with advice of the jurists. I do not wish into go into details of crime.
Similarly for fornication if the person is not married, the punishment is a hundred lashes :
Allaah says (interpretation of the meaning):
If they are married, the hadd punishment is stoning:
Regarding fornication, it has to be proven in the way dictated by sharee’ah, such as a confession of the zaani (fornicator), or the testimony of four men of good character who witnessed the act of fornication.
However, it should be noted that no one should carry out the hadd punishments without the permission of the ruler. If there is no ruler who rules according to sharee’ah then it is not permissible for the ordinary people to carry out the hadd punishments. Whoever does that is sinning, because carrying out the hadd punishments requires examining the matter and requires shar’i knowledge in order to know the conditions of proof.
References: The hadd punishment for theft
These are law of Allah who is the most just and all knowing. And indeed, in following them is our success and safety. Some of these crimes are so abhorrent and they spread mischief in land, affecting society and its people.