Bismillah.
Narrated Abu Huraira:
The Prophet said, "(On the Day of Resurrection) camels will come to their owner in the best state of health they have ever had (in the world), and if he had not paid their Zakat (in the world) then they would tread him with their feet; and similarly, sheep will come to their owner in the best state of health they have ever had in the world, and if he had not paid their Zakat, then they would tread him with their hooves and would butt him with their horns." The Prophet added, "One of their rights is that they should be milked while water is kept in front of them." The Prophet added, "I do not want anyone of you to come to me on the Day of Resurrection, carrying over his neck a sheep that will be bleating. Such a person will (then) say, 'O Muhammad! (please intercede for me,) I will say to him. 'I can't help you, for I conveyed Allah's Message to you.' Similarly, I do not want anyone of you to come to me carrying over his neck a camel that will be grunting. Such a person (then) will say "O Muhammad! (please intercede for me)." I will say to him, "I can't help you for I conveyed Allah's message to you."
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:-- 'Let not those who withhold . . .' (to the end of the verse). (3.180).
In the tafsir of the mentioned ayah (3: 180), Ibn Kathir says:
Allah said,
﴿وَلاَ يَحْسَبَنَّ الَّذِينَ يَبْخَلُونَ بِمَآ ءَاتَـهُمُ اللَّهُ مِن فَضْلِهِ هُوَ خَيْراً لَّهُمْ بَلْ هُوَ شَرٌّ لَّهُمْ﴾
( And let not those who are stingy with that which Allah has bestowed on them of His bounty (wealth) think that it is good for them. Nay, it will be worse for them.) ﴿3:180﴾
Therefore, the Ayah says that the miser should not think that collecting money will benefit him. Rather, it will harm him in his religion and worldly affairs. Allah mentions the money that the miser collected on the Day of Resurrection,
﴿سَيُطَوَّقُونَ مَا بَخِلُواْ بِهِ يَوْمَ الْقِيَـمَةِ﴾
(the things that they stingy with shall be tied to their necks like a collar on the Day of Resurrection.)
Al-Bukhari recorded that Abu Hurayrah said that the Messenger of Allah said,
«مَنْ آتَاهُ اللهُ مَالًا فَلَمْ يُؤَدِّ زَكَاتَهُ، مُثِّلَ لَهُ شُجَاعًا أَقْرَعَ، لَهُ زَبِيبَتَانِ، يُطَوَّقُهُ يَوْمَ الْقِيَامَةِ، يَأْخُذُ بِلِهْزِمَتَيْهِ يَعْنِي بِشِدْقَيْهِ يَقُولُ: أَنَا مَالُكَ، أَنَا كَنْزُك»
(Whoever Allah makes wealthy and he does not pay the Zakah due on his wealth, then (on the Day of Resurrection) his wealth will be made in the likeness of a bald-headed poisonous male snake with two black spots over the eyes. The snake will encircle his neck and bite his cheeks and proclaim, `I am your wealth, I am your treasure.')
The Prophet then recited the Ayah,
﴿وَلاَ يَحْسَبَنَّ الَّذِينَ يَبْخَلُونَ بِمَآ ءَاتَـهُمُ اللَّهُ مِن فَضْلِهِ هُوَ خَيْراً لَّهُمْ بَلْ هُوَ شَرٌّ لَّهُمْ﴾
( And let not those who are stingy with that which Allah has bestowed on them of His bounty think that it is good for them. Nay, it will be worse for them), until the end. Al-Bukhari, but not Muslim, collected this Hadith using this chain of narration, Ibn Hibban also collected it in his Sahih.
Imam Ahmad recorded that `Abdullah said that the Prophet said,
«مَا مِنْ عَبْدٍلَا يُؤَدِّي زَكَاةَ مَالِهِ إِلَّا جُعِلَ لَهُ شُجَاعٌ أَقْرَعُ يَتْبَعُهُ، يَفِرُّ مِنْهُ وَهُوَ يَتْبَعُهُ، فَيَقُولُ: أَنَا كَنْزُك»
(Every person who does not pay the Zakah due on his wealth, will have his money made into the shape of a bald-headed, poisonous male snake who will follow him. The person will run away from the snake, who will follow him and proclaim, `I am your treasure.')
`Abdullah then recited the Ayah in Allah's Book that testifies to this fact,
﴿سَيُطَوَّقُونَ مَا بَخِلُواْ بِهِ يَوْمَ الْقِيَـمَةِ﴾
(the things that they were stingy with shall be tied to their necks like a collar on the Day of Resurrection.)
This was recorded by At-Tirmidhi, An-Nasa'i, and Ibn Majah, and At-Tirmidhi said, "Hasan Sahih.''
Allah's statement,
﴿وَلِلَّهِ مِيرَاثُ السَّمَـوَتِ وَالاٌّرْضِ﴾
(And to Allah belongs the inheritance of the heavens and the Earth), means,
﴿وَأَنفِقُواْ مِمَّا جَعَلَكُم مُّسْتَخْلَفِينَ فِيهِ﴾
(and spend of that whereof He has made you trustees) ﴿57: 7﴾. Therefore, since all affairs are under Allah's control, then spend from your money so it will benefit you on the Day of Return,
﴿وَاللَّهُ بِمَا تَعْمَلُونَ خَبِيرٌ﴾
(and Allah is Well-Acquainted with all that you do.) with your intentions and what your hearts conceal.
It's pretty clear that not paying zakah is no joke. Severe punishments are prescribed for the one who does not pay zakah, in the grave as well as on the Day of Judgement [some will graze on al-daree’ and al-zaqqoom (horrid types of food in Hell) because they withheld the zakaah of their wealth]. Then what is to be said about him in this world?
Zakaah is one of the pillars of Islam. If a person does not do it because he does not believe that it is obligatory, the ruling should be explained to him and if he persists, then he is a kaafir, and the funeral prayer cannot be offered for him and he cannot be buried in the Muslim graveyard. But if he does not pay zakaah because he is stingy, but he believes that it is obligatory, then he is a sinner who is guilty of a major sin and he is a wrong doer, but he is not a kaafir. Therefore he should be washed (ghusl) and the funeral prayer should be offered for him if he dies in this state, and his case will be decided on the Day of Resurrection.
(Fataawaa al-Lajnah al-Daa’imah, 9/184)
Further reading: ruling on the one who does not pay zakah
Read more on this major sin: non-payment of zakah.
