It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: On the Day of Resurrection, the sun will come as close as the length of a spear, and its heat will be multiplied many times. Because of its heat, brains will boil just as pots boil. People will be drenched in their sweat according to the measure of their sins: for some, the sweat will reach up to their ankles, for some up to their shins, for some up to their waists, and for some up to their mouths.