Hadith: On the Day of Judgment, the sun will be brought close to the people until it is only a Mīl away from them

عَنِ الْمِقْدَادِ بْنِ الْأَسْوَدِ رَضيَ اللهُ عنهُ قَالَ: سَمِعْتُ رَسُولَ اللهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ، يَقُولُ:
«تُدْنَى الشَّمْسُ يَوْمَ الْقِيَامَةِ مِنَ الْخَلْقِ، حَتَّى تَكُونَ مِنْهُمْ كَمِقْدَارِ مِيلٍ»، قَالَ سُلَيْمُ بْنُ عَامِرٍ: فَوَاللهِ مَا أَدْرِي مَا يَعْنِي بِالْمِيلِ؟ أَمَسَافَةَ الْأَرْضِ، أَمِ الْمِيلَ الَّذِي تُكْتَحَلُ بِهِ الْعَيْنُ قَالَ: «فَيَكُونُ النَّاسُ عَلَى قَدْرِ أَعْمَالِهِمْ فِي الْعَرَقِ، فَمِنْهُمْ مَنْ يَكُونُ إِلَى كَعْبَيْهِ، وَمِنْهُمْ مَنْ يَكُونُ إِلَى رُكْبَتَيْهِ، وَمِنْهُمْ مَنْ يَكُونُ إِلَى حَقْوَيْهِ، وَمِنْهُمْ مَنْ يُلْجِمُهُ الْعَرَقُ إِلْجَامًا» قَالَ: وَأَشَارَ رَسُولُ اللهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ بِيَدِهِ إِلَى فِيهِ.
[صحيح] - [رواه مسلم] - [صحيح مسلم: 2864]

Al-Miqdād ibn al-Aswad (may Allah be pleased with him) reported: I heard the Messenger of Allah (may Allah's peace and blessings be upon him) say:
"On the Day of Judgment, the sun will be brought close to the people until it is only a Mīl away from them." Sulaym ibn ‘Ᾱmir said: By Allah, I do not know what he meant by "mīl". Is it the distance of the earth, or the "mīl" used as kohl for the eyes? He said: "People will be in sweat according to their deeds. Some will be up to their ankles, some up to their knees, some up to their waist, while others will be bridled by sweat." He said: And the Messenger of Allah (may Allah's peace and blessings be upon him) pointed with his hand to his mouth.
[Authentic hadith] - [Narrated by Muslim] - [Sahih Muslim - 2864]

Explanation

The Prophet (may Allah's peace and blessings be upon him) informed that on the Day of Judgment, the sun will be brought close to the people and will approach them until it is only a mile's distance from their heads. Sulaym ibn ‘Āmir, the Tābi‘i, said: By Allah, I do not know which of the two meanings he was referring to, that of the distance on earth or the one used as kohl for the eye? He said: They will be in sweat according to their deeds. Some of them will have sweat up to their ankles, some up to their knees, some up to their waist and the waistband of their lower garments, and some will have sweat reaching their mouths, preventing them from speaking. He said: He (may Allah's peace and blessings be upon him) pointed with his hand to his mouth.

Benefits from the Hadith

1. Clarifying the horrors of the Day of Judgment and warning against them.
2. On the Day of Judgment, people will be in difficulty at the standing place according to their deeds.
3. Encouraging the performance of good deeds and warning against evil deeds.