Narrated Abu Huraira (radi’Allahu anhu) : Allah’s Apostle (sall’Allahu alaihi wa sallam) said,  “Anyone whom Allah has given wealth but he does not pay its zakat, then, on the Day of Resurrection, his wealth will be presented to him in the shape of a bald-headed poisonous male snake
with two poisonous glands in its mouth and with two black spots over the eyes. it will encircle itself round his neck and bite him over his cheeks and say, “I am your wealth; I am your treasure.”

Then the Prophet (sall’Allahu alaihi wa sallam) recited this Divine Verse:–
“And let not those who covetously withhold of that which Allah has bestowed upon them of His Bounty.”
(3.180)

{Sahih Bukhari}

(Book #60, Hadith #88) (Book #24, Hadith #486)

Narrated Abu Dhar (radi’Allahu anhu) : Once I went to him (the Prophet ) and he (sall’Allahu alaihi wa sallam) 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.”

{Sahih Bukhari}

(Book #24, Hadith #539)

Abu Huraira (radi’Allahu anhu) reported
Allah’s Messenger (sall’Allahu alaihi wa sallam) 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 (sall’Allahu alaihi wa sallam) 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 (sall’Allahu alaihi wa sallam) said: If 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…”

Sahih Muslim

(Book #005, Hadith #2161)