Sunan Abi Dawud 1046
Narrated AbuHurayrah:
The Messenger of Allah (ﷺ) said: The best day on which the sun has risen is Friday; on it Adam was created, on it he was expelled (from Paradise), on it his contrition was accepted, on it he died, and on it the Last Hour will take place. On Friday every beast is on the lookout from dawn to sunrise in fear of the Last Hour, but not jinn and men, and it contains a time at which no Muslim prays and asks anything from Allah but He will give it to him.  Ka'b said: That is one day every year.  So I said: It is on every Friday.  Ka'b read the Torah and said: The Messenger of Allah (ﷺ) has spoken the truth.  AbuHurayrah said: I met Abdullah ibn Salam and told him of my meeting with Ka'b.  Abdullah ibn Salam said: I know what time it is.  AbuHurayrah said: I asked him to tell me about it. Abdullah ibn Salam said: It is at the very end of Friday.  I asked: How can it be when the Messenger of Allah (ﷺ) has said: "No Muslim finds it while he is praying...." and this is the moment when no prayer is offered.  Abdullah ibn Salam said: Has the Messenger of Allah (ﷺ) not said: "If anyone is seated waiting for the prayer, he is engaged in the prayer until he observes it."  I said: Yes, it is so.
حَدَّثَنَا الْقَعْنَبِيُّ، عَنْ مَالِكٍ، عَنْ يَزِيدَ بْنِ عَبْدِ اللَّهِ بْنِ الْهَادِ، عَنْ مُحَمَّدِ بْنِ إِبْرَاهِيمَ، عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ خَيْرُ يَوْمٍ طَلَعَتْ فِيهِ الشَّمْسُ يَوْمُ الْجُمُعَةِ فِيهِ خُلِقَ آدَمُ وَفِيهِ أُهْبِطَ وَفِيهِ تِيبَ عَلَيْهِ وَفِيهِ مَاتَ وَفِيهِ تَقُومُ السَّاعَةُ وَمَا مِنْ دَابَّةٍ إِلاَّ وَهِيَ مُسِيخَةٌ يَوْمَ الْجُمُعَةِ مِنْ حِينَ تُصْبِحُ حَتَّى تَطْلُعَ الشَّمْسُ شَفَقًا مِنَ السَّاعَةِ إِلاَّ الْجِنَّ وَالإِنْسَ وَفِيهِ سَاعَةٌ لاَ يُصَادِفُهَا عَبْدٌ مُسْلِمٌ وَهُوَ يُصَلِّي يَسْأَلُ اللَّهَ حَاجَةً إِلاَّ أَعْطَاهُ إِيَّاهَا ‏"‏ ‏.‏ قَالَ كَعْبٌ ذَلِكَ فِي كُلِّ سَنَةٍ يَوْمٌ ‏.‏ فَقُلْتُ بَلْ فِي كُلِّ جُمُعَةٍ ‏.‏ قَالَ فَقَرَأَ كَعْبٌ التَّوْرَاةَ فَقَالَ صَدَقَ النَّبِيُّ صلى الله عليه وسلم ‏.‏ قَالَ أَبُو هُرَيْرَةَ ثُمَّ لَقِيتُ عَبْدَ اللَّهِ بْنَ سَلاَمٍ فَحَدَّثْتُهُ بِمَجْلِسِي مَعَ كَعْبٍ فَقَالَ عَبْدُ اللَّهِ بْنُ سَلاَمٍ قَدْ عَلِمْتُ أَيَّةَ سَاعَةٍ هِيَ ‏.‏ قَالَ أَبُو هُرَيْرَةَ فَقُلْتُ لَهُ فَأَخْبِرْنِي بِهَا ‏.‏ فَقَالَ عَبْدُ اللَّهِ بْنُ سَلاَمٍ هِيَ آخِرُ سَاعَةٍ مِنْ يَوْمِ الْجُمُعَةِ ‏.‏ فَقُلْتُ كَيْفَ هِيَ آخِرُ سَاعَةٍ مِنْ يَوْمِ الْجُمُعَةِ وَقَدْ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ لاَ يُصَادِفُهَا عَبْدٌ مُسْلِمٌ وَهُوَ يُصَلِّي ‏"‏ ‏.‏ وَتِلْكَ السَّاعَةُ لاَ يُصَلَّى فِيهَا ‏.‏ فَقَالَ عَبْدُ اللَّهِ بْنُ سَلاَمٍ أَلَمْ يَقُلْ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ مَنْ جَلَسَ مَجْلِسًا يَنْتَظِرُ الصَّلاَةَ فَهُوَ فِي صَلاَةٍ حَتَّى يُصَلِّيَ ‏"‏ ‏.‏ قَالَ فَقُلْتُ بَلَى ‏.‏ قَالَ هُوَ ذَاكَ ‏.‏