Full Sharh — Mishkat al-Masabih 1291
وَعَنْ أَبِي هُرَيْرَةَ قَالَ: قِيلَ لِلنَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: لِأَيِّ شَيْءٍ سُمِّيَ يَوْمَ الْجُمُعَةِ؟ قَالَ: «لِأَنَّ فِيهَا طُبِعَتْ طِينَةُ أَبِيكَ آدَمَ وَفِيهَا الصَّعْقَةُ وَالْبَعْثَةُ وَفِيهَا الْبَطْشَةُ وَفِي آخِرِ ثَلَاثِ سَاعَاتٍ مِنْهَا سَاعَةٌ مَنْ دَعَا الله فِيهَا اسْتُجِيبَ لَهُ» . رَوَاهُ أَحْمد
English Translation
Abu Huraira said that when the Prophet was asked for what reason Friday got its name he replied, "Because on it the nature of your father Adam was fashioned, on it will take place the shout and the resurrection of the dead, on it the assault* will take place, and at the end of three hours in it there is a time at which anyone who makes supplication to God will be answered." * cf. Al-Qur’an, 44:16. Ahmad transmitted it.
Source
Mishkat al-Masabih(مشكاة المصابيح)
Prayer
Hadith Number
1291