Mukhtasar Muslim

Sayyiduna Nu'man bin Bashir (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings be upon him) said: The lightest punishment will be for the one who will wear two sandals and two straps of fire; his brain will boil like a cauldron boils. He will think that no one is being punished more severely than him, although he will be receiving the lightest punishment.