Indeed Hamim will be poured over their heads. The Hamim will penetrate until it finds its way to his insides. Then whatever is inside him will fall out until it pours over his feet while it melts away. Then he will be reformed to how he was." (Using translation from Tirmidhī 2582)
السيوطي ٥٤٥٨a:
"إِنَّ الحميمَ لَيُصَبُّ على رءُوسِهِمْ فينفُذُ الحميمُ حتَّى يَخْلُصَ إِلى جوفهِ، فَيُسْلَت ما فِي جوفِهِ، حتَّى يَمْرُقَ من قدمَيهِ، وهو الصَّهْرُ ثُم يُعَادُ كما كانَ".