Messenger of Allah (ﷺ) said, "On the Day of Resurrection, the sun will come so close to people that there would be left only a distance of one Meel". Sulaim bin 'Amir said: By Allah, I do not know whether he meant by "Meel", the mile of the distance measure or the stick used for applying antimony powder to the eye. (Messenger of Allah (ﷺ) is, however, reported to have said:) "The people then will be submerged in perspiration according to their deeds, some up to their ankles, some up to their knees, some up to the waist and some will have the bridle of perspiration (reaching their mouth and nose) and, while saying this Messenger of Allah (ﷺ) pointed to his mouth with his hand".

[Muslim].