Allah says,

﴿وَالْيَوْمِ الْمَوْعُودِ - وَشَـهِدٍ وَمَشْهُودٍ ﴾

(And by the Promised Day. And by the Witness, and by the Witnessed.) Ibn Abi Hatim recorded from Abu Hurayrah that the Messenger of Allah said,

﴿وَالْيَوْمِ الْمَوْعُودِ ﴾

يَوْمُ الْقِيَامَةِ

﴿وَشَهِدَ﴾

يَوْمُ الْجُمُعَةِ، وَمَا طَلَعَتْ شَمْسٌ وَلَا غَرَبَتْ عَلَى يَوْمٍ أَفْضَلَ مِنْ يَوْمِ الْجُمُعَةِ، وَفِيهِ سَاعَةٌ لَا يُوَافِقُهَا عَبْدٌ مُسْلِمٌ يَسْأَلُ اللهَ فِيهَا خَيْرًا إِلَّا أَعْطَاهُ إِيَّاهُ، وَلَا يَسْتَعِيذُ فِيهَا مِنْ شَرَ إِلَّا أَعَاذَهُ.

﴿وَمَشْهُودٍ﴾

يَوْمُ عَرَفَة»

(And by the Promised Day.)( This refers to the Day of Judgement. (And by the Witness.) This refers to Friday, and the sun does not rise or set on a day that is better than Friday. During it there is an hour that no Muslim servant catches while asking Allah from some good except that Allah will give it to him. He does not seek refuge from any evil in it except that Allah will protect him. (And by the Witnessed.)( This refers to the day of `Arafah (in Hajj).) Ibn Khuzaymah also recorded the same Hadith. It has also been recorded as a statement of Abu Hurayrah and it is similar (to this Hadith).