The least tortured one among the dwellers of Fire on the Day of Judgment is a man who will have two live coals placed underneath his feet that will cause his brain to boil. He will think that none is tortured more than him, while he is the least tortured. [Al-Bukhari]

"«إن أَهْوَنَ أهل النار عذابا يوم القيامة لرجل يوضع في أَخْمَصِ قدميه جمرتان يغلي منهما دماغه ما يرى أن أحدا أشد منه عذابا وإنه لَأَهْوَنُهُم عذابا». [صحيح.] - [متفق عليه.]"