At-Tawbah · 9:35

35. On the Day of Judgement, what they hoarded and did not give its right will be heated in the fire of Hell; and when it is greatly heated, it will be placed on their foreheads, sides and backs, then reheated when it cools, on a day lasting fifty thousand years. It will be said to them, by way of blame, that this is the wealth they hoarded for themselves, not paying the Zakat from it, or spending it in the way they were ordered; and they will be told to taste the evil consequences of what they hoarded and did not use correctly.