Sayyiduna Nu’man bin Bashir (may Allah be pleased with him) narrated that I heard the Prophet Muhammad (peace and blessings be upon him) say: On the Day of Resurrection, the person who will receive the lightest punishment will be the one under whose feet a burning ember of fire will be placed, and because of it his brain will be boiling. (In Sahih Muslim, it is mentioned that he will be made to wear two sandals of fire; this refers to Abu Talib.)