Surah At-Tawbah, verse 35

يَوْمَ يُحْمَىٰ عَلَيْهَا فِى نَارِ جَهَنَّمَ فَتُكْوَىٰ بِهَا جِبَاهُهُمْ وَجُنُوبُهُمْ وَظُهُورُهُمْ ۖ هَـٰذَا مَا كَنَزْتُمْ لِأَنفُسِكُمْ فَذُوقُوا۟ مَا كُنتُمْ تَكْنِزُونَ ﴿٣٥﴾

9:35 On the Day when their treasures will be heated up in the Fire of Hell, and their foreheads, sides and backs will be branded with it. [They will be told], “This is what you hoarded for yourselves; so taste [the punishment of] what you used to hoard.”