Before you there will be a pond the distance between whose sides is like that between Jarbah and Adhruh.  

قَالَ رَسُولُ اللَّهِ ﷺ إِنَّ أَمَامَكُمْ حَوْضًا مَا بَيْنَ نَاحِيَتَيْهِ كَمَا بَيْنَ جَرْبَاءَ وَأَذْرُحَ  

We were with the Messenger of Allah ﷺ. He said when we arrived at a halting place: You are not a hundred thousandth part of those who will come down to me at the pond. I (the narrator AbuHamzah) asked: What was your number that day? He replied: Seven or eight hundred.  

كُنَّا مَعَ رَسُولِ اللَّهِ ﷺ فَنَزَلْنَا مَنْزِلاً فَقَالَ مَا أَنْتُمْ جُزْءٌ مِنْ مِائَةِ أَلْفِ جُزْءٍ مِمَّنْ يَرِدُ عَلَىَّ الْحَوْضَ قَالَ قُلْتُ كَمْ كُنْتُمْ يَوْمَئِذٍ قَالَ سَبْعَمِائَةٍ أَوْ ثَمَانَمِائَةٍ  

The Messenger of Allah ﷺ dozed for a short while and raised his smiling. He either said to them(people) or they said to him: Messenger of Allah! Why did you laugh? He said: A surah has been revealed to me just now, and then he recited: “In the name of Allah, Most Gracious. Most Merciful. To thee We have granted the fount (of abundance)” up to the end. When he recited, he asked: Do you know what al-kauthar is? They replied: Allah and his Apostle know best. He said: It is a river which my Lord, the Exalted, has promised me( to grant) in Paradise: there is abundance of good and upon it there is a pond which my people will approach on the Day of Resurrection. There are vessels as numerous as stars(in the sky).  

سَمِعْتُ أَنَسَ بْنَ مَالِكٍ يَقُولُ أَغْفَى رَسُولُ اللَّهِ ﷺ إِغْفَاءَةً فَرَفَعَ رَأْسَهُ مُتَبَسِّمًا فَإِمَّا قَالَ لَهُمْ وَإِمَّا قَالُوا لَهُ يَا رَسُولَ اللَّهِ لِمَ ضَحِكْتَ فَقَالَ إِنَّهُ أُنْزِلَتْ عَلَىَّ آنِفًا سُورَةٌ فَقَرَأَ بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيمِ {إِنَّا أَعْطَيْنَاكَ الْكَوْثَرَ} حَتَّى خَتَمَهَا فَلَمَّا قَرَأَهَا قَالَ هَلْ تَدْرُونَ مَا الْكَوْثَرُ قَالُوا اللَّهُ وَرَسُولُهُ أَعْلَمُ قَالَ فَإِنَّهُ نَهْرٌ وَعَدَنِيهِ رَبِّي ﷻ فِي الْجَنَّةِ وَعَلَيْهِ خَيْرٌ كَثِيرٌ عَلَيْهِ حَوْضٌ تَرِدُ عَلَيْهِ أُمَّتِي يَوْمَ الْقِيَامَةِ آنِيَتُهُ عَدَدُ الْكَوَاكِبِ  

When the Prophet of Allah ﷺ was lifted to the heavens (for travelling) in Paradise, or as he said, a river whose banks were of transparent or hollowed pearls was presented to him. The angel who was with him struck it with his hand and took out musk. Muhammad ﷺ then asked the angel who was with him: What is this? He replied: It is al-Kawthar which Allah has given you.  

لَمَّا عُرِجَ بِنَبِيِّ اللَّهِ ﷺ فِي الْجَنَّةِ أَوْ كَمَا قَالَ عُرِضَ لَهُ نَهْرٌ حَافَتَاهُ الْيَاقُوتُ الْمُجَيَّبُ أَوْ قَالَ الْمُجَوَّفُ فَضَرَبَ الْمَلَكُ الَّذِي مَعَهُ يَدَهُ فَاسْتَخْرَجَ مِسْكًا فَقَالَ مُحَمَّدٌ ﷺ لِلْمَلَكِ الَّذِي مَعَهُ مَا هَذَا قَالَ هَذَا الْكَوْثَرُ الَّذِي أَعْطَاكَ اللَّهُ ﷻ  

I saw AbuBarzah who came to visit Ubaydullah ibn Ziyad. Then a man named Muslim who was there in the company mentioned it to me. When Ubaydullah saw him, he said: This Muhammadan [i.e. Companion of Muhammad ﷺ] of yours is short and fat. The old man (i.e. AbuBarzah) understood it. So he said: I did not think I would remain amongst a people who would criticize me for having had the company of Muhammad ﷺ. Thereupon Ubaydullah said to him: The company of Muhammad ﷺ is a honour for you, not a disgrace. He added: I called for you to ask about the Haud (reservoir or cistern). Did you hear the Messenger of Allah ﷺ say anything about it? AbuBarzah said: Yes, not once, twice, thrice, four times or five times. Whoever disbelieves in it, may Allah not supply him with water from it. He then went away angrily.  

فَحَدَّثَنِي فُلاَنٌ سَمَّاهُ مُسْلِمٌ وَكَانَ فِي السِّمَاطِ فَلَمَّا رَآهُ عُبَيْدُ اللَّهِ قَالَ إِنَّ مُحَمَّدِيَّكُمْ هَذَا الدَّحْدَاحُ فَفَهِمَهَا الشَّيْخُ فَقَالَ مَا كُنْتُ أَحْسِبُ أَنِّي أَبْقَى فِي قَوْمٍ يُعَيِّرُونِي بِصُحْبَةِ مُحَمَّدٍ ﷺ فَقَالَ لَهُ عُبَيْدُ اللَّهِ إِنَّ صُحْبَةَ مُحَمَّدٍ ﷺ لَكَ زَيْنٌ غَيْرُ شَيْنٍ ثُمَّ قَالَ إِنَّمَا بُعِثْتُ إِلَيْكَ لأَسْأَلَكَ عَنِ الْحَوْضِ سَمِعْتَ رَسُولَ اللَّهِ ﷺ يَذْكُرُ فِيهِ شَيْئًا فَقَالَ أَبُو بَرْزَةَ نَعَمْ لاَ مَرَّةً وَلاَ ثِنْتَيْنِ وَلاَ ثَلاَثًا وَلاَ أَرْبَعًا وَلاَ خَمْسًا فَمَنْ كَذَّبَ بِهِ فَلاَ سَقَاهُ اللَّهُ مِنْهُ ثُمَّ خَرَجَ مُغْضَبًا