Sunan An Nasai 905

أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ قال:‏‏‏‏ حَدَّثَنَا عَلِيُّ بْنُ مُسْهِرٍ، ‏‏‏‏‏‏عَنِ الْمُخْتَارِ بْنِ فُلْفُلٍ، ‏‏‏‏‏‏عَنْ أَنَسِ بْنِ مَالِكٍ قال:‏‏‏‏ بَيْنَمَا ذَاتَ يَوْمٍ بَيْنَ أَظْهُرِنَا يُرِيدُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذْ أَغْفَى إِغْفَاءَةً، ‏‏‏‏‏‏ثُمَّ رَفَعَ رَأْسَهُ مُتَبَسِّمًا فَقُلْنَا لَهُ:‏‏‏‏ مَا أَضْحَكَكَ يَا رَسُولَ اللَّهِ ؟ قَالَ:‏‏‏‏ نَزَلَتْ عَلَيَّ آنِفًا سُورَةٌ بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيمِ، ‏‏‏‏‏‏إِنَّا أَعْطَيْنَاكَ الْكَوْثَرَ ‏‏‏‏ 1 ‏‏‏‏ فَصَلِّ لِرَبِّكَ وَانْحَرْ ‏‏‏‏ 2 ‏‏‏‏ إِنَّ شَانِئَكَ هُوَ الأَبْتَرُ ‏‏‏‏ 3 ‏‏‏‏ سورة الكوثر آية 1-3، ‏‏‏‏‏‏ثُمَّ قَالَ:‏‏‏‏ هَلْ تَدْرُونَ مَا الْكَوْثَرُ قُلْنَا:‏‏‏‏ اللَّهُ وَرَسُولُهُ أَعْلَمُ قَالَ:‏‏‏‏ فَإِنَّهُ نَهْرٌ وَعَدَنِيهِ رَبِّي فِي الْجَنَّةِ آنِيَتُهُ أَكْثَرُ مِنْ عَدَدِ الْكَوَاكِبِ تَرِدُهُ عَلَيَّ أُمَّتِي فَيُخْتَلَجُ الْعَبْدُ مِنْهُمْ فَأَقُولُ يَا رَبِّ:‏‏‏‏ إِنَّهُ مِنْ أُمَّتِي فَيَقُولُ لِي إِنَّكَ لَا تَدْرِي مَا أَحْدَثَ بَعْدَكَ .

It was narrated that Anas in Malik said: One day when he-the Prophet (ﷺ)- was still among us, he took a nap, then he raised his head, smiling. We said to him: 'Why are you smiling, O Messenger of Allah?' He said: 'Just now this Surah was revealed to me: In the Name of Allah, the Most Gracious, the Most Merciful. Verily, We have granted you (O Muahmmad) Al-Kawthar. Therefore turn in prayer to your Lord and sacrifice (to Him only). For he who hates you, he will be cut off.' Then he said: 'Do you know what Al-Kawthar is?' We said: 'Allah and His Messenger know best.' He said: 'It is a river that my Lord has promised me in Paradise. Its vessels are more than the number of the stars. My Ummah will come to me, then a man among them will be pulled away and I will say: O Lord, he is one of my Ummah and He will say to me: 'You do not know what he did after you were gone.