Punishment for those who do not give Zakat

Zakat is the Fourth Pillar of Islam. It is an obligation (Fard), prescribed by ALLAH on those Muslim men and women who possess enough means, to distribute a certain percentage of their annual savings or capital in goods or money among the poor and the needy. It is called Zakat because the word Zakat is from Zakaa which means, to increase, purify and bless.
ALLAH says in Quran:
Of their goods, take alms, that so thou mightest purify and sanctify them; and pray on their behalf. Verily thy prayers are a source of security for them: And Allah is One Who heareth and knoweth (9:103)

It has been mentioned, along with Namaz, over seventy times in the Quran. Some verses are as follow..

And establish prayer and give zakah and bow with those who bow [in worship and obedience].(2:43)

And establish prayer and give zakah, and whatever good you put forward for yourselves - you will find it with Allah. Indeed, Allah of what you do, is Seeing.(2:110)

The believing men and believing women are allies of one another. They enjoin what is right and forbid what is wrong and establish prayer and give zakah and obey Allah and His Messenger. Those - Allah will have mercy upon them. Indeed, Allah is Exalted in Might and Wise.(9:71)

Indeed, your Lord knows, [O Muhammad], that you stand [in prayer] almost two thirds of the night or half of it or a third of it, and [so do] a group of those with you. And Allah determines [the extent of] the night and the day. He has known that you [Muslims] will not be able to do it and has turned to you in forgiveness, so recite what is easy [for you] of the Qur'an. He has known that there will be among you those who are ill and others traveling throughout the land seeking [something] of the bounty of Allah and others fighting for the cause of Allah . So recite what is easy from it and establish prayer and give zakah and loan Allah a goodly loan. And whatever good you put forward for yourselves - you will find it with Allah . It is better and greater in reward. And seek forgiveness of Allah . Indeed, Allah is Forgiving and Merciful.(73:20)

Zakat is one of the important pillar of Islam and it is compulsory by Allah. A majority of Muslims pay Zakat ever year. However many wealthy muslims do not pay zakat. For those wealthy muslims who do not pay Zakat Allah will give them some punishments.

O ye who believe! there are indeed many among the priests and anchorites, who in Falsehood devour the substance of men and hinder (them) from the way of Allah. And there are those who bury gold and silver and spend it not in the way of Allah: announce unto them a most grievous penalty- On the Day when heat will be produced out of that (wealth) in the fire of Hell, and with it will be branded their foreheads, their flanks, and their backs, their flanks, and their backs.- "This is the (treasure) which ye buried for yourselves: taste ye, then, the (treasures) ye buried!"(9:34-35)

And let not those who covetously withhold of the gifts which Allah Hath given them of His Grace, think that it is good for them: Nay, it will be the worse for them: soon shall the things which they covetously withheld be tied to their necks Like a twisted collar, on the Day of Judgment. To Allah belongs the heritage of the heavens and the earth; and Allah is well-acquainted with all that ye do.(3:180)

Look at this python snake.... Horrible ? Just imagine a snake in HELL for those who do not pay Zakat... ASTAGFIRULLAH

Narrated Abu Huraira: Allah's Apostle said, "Whoever is made wealthy by Allah and does not pay the Zakat of his wealth, then on the Day of Resurrection his wealth will be made like a bald-headed poisonous male snake with two black spots over the eyes. The snake will encircle his neck and bite his cheeks and say, 'I am your wealth, I am your treasure.' " Then the Prophet recited the holy verses:-- And let not those who covetously withhold of the gifts which Allah Hath given them of His Grace, think that it is good for them: Nay, it will be the worse for them: soon shall the things which they covetously withheld be tied to their necks Like a twisted collar, on the Day of Judgment. To Allah belongs the heritage of the heavens and the earth; and Allah is well-acquainted with all that ye do. (3:180).Sahih Bukhari - (Book #24, Hadith #486)

Narrated Abu Dhar: Once I went to him (the Prophet ) and he said, "By Allah in Whose Hands my life is (or probably said, 'By Allah, except Whom none has the right to be worshipped) whoever had camels or cows or sheep and did not pay their Zakat, those animals will be brought on the Day of Resurrection far bigger and fatter than before and they will tread him under their hooves, and will butt him with their horns, and (those animals will come in circle): When the last does its turn, the first will start again, and this punishment will go on till Allah has finished the judgments amongst the people."  (Book #24, Hadith #539)

Abu Huraira reported Allah's Messenger (way peace be upon him) as saying: If any owner of gold or silver does not pay what is due on him, when the Day of Resurrection would come, plates of fire would be beaten out for him; these would then be heated in the fire of Hell and his sides, his forehead and his back would be cauterized with them. Whenever these cool down, (the process is) repeated during a day the extent of which would be fifty thousand years, until judgment is pronounced among servants, and he sees whether his path is to take him to Paradise or to Hell. It was said: Messenger of Allah, what about the camel? He (the Holy Prophet) said: If any owner of the camel does not pay what is due on him, and of his due in that (camel) is (also) to milk it on the day when it comes down to water. When the Day of Resurrection comes a soft sandy plain would be set for him, as extensive as possible, (he will find) that not a single young one is missing, and they will trample him with their hoofs and bite him with their mouths. As often as the first of them passes him, the last of them would be made to return during a day the extent of which would be fifty thousand years, until judgment is pronounced among servants and he sees whether his path is to take him to Paradise or to Hell. It was (again) said: Messenger of Allah, what about cows (cattle) and sheep? He said: It any owner of the cattle and sheep does not pay what is due on them, when the Day of Resurrection comes a soft sandy plain would be spread for them, he will find none of them missing, with twisted horns, without horns or with a broken horn, and they will gore him with their horns and trample him with their hoofs. As often as the first of them passes him the last of them would be made to return to him during a day the extent of which would be fifty thousand years, until judgment would be pronounced among the servants. And he would be shown his path-path leading him to Paradise or to Hell. It was said: Messenger of Allah, what about the horse? Upon this he said: The horses are of three types. To one than (these are) a burden, and to another man (these are) a covering, and still to another man (these are) a source of reward. The one for whom these are a burden is the person who rears them in order to show off, for vainglory and for opposing the Muslims; so they are a burden for him. The one for whom these are a covering is the person who rears them for the sake of Allah but does not forget the right of Allah concerning their backs and their necks, and so they are a covering for him. As for those which bring reward (these refer to) the person who rears them for the sake of Allah to be used for Muslims and he puts them in meadow and field. And whatever thing do these eat from that meadow and field would be recorded on his behalf as good deeds, as would also the amount of their dung and urine. And these would not break their halter and prance a course or two without having got recorded the amount of their hoof marks and their dung as a good deed on his behalf (on behalf of their owner). And their master does not bring them past a river from which they drink, though he did not intend to quench their thirst, but Allah would record for him the amount of what they drink on his behalf as deeds. It was said: Messenger of Allah, what about the asses?, Upon this he said: Nothing has been revealed to me in regard to the asses (in particular) except this one verse of a comprehensive nature:" He who does an atom's weight of good will see it, and he who does an atom's weight of evil will see it"

Sahih Muslim - (Book #005, Hadith #2161)

May ALLAH guide us and protect us from Jahanum AMeen