Anas narrated that the Messenger of Allah said:

“While I was traveling through Paradise, a river appeared before me whose banks had tents of pearl. I said to the angel: ‘What is this?’ He said: ‘This is Al-Kauthar, which Allah has granted you.’” He said: “Then he put his hand in the clay, and removed musk from it, then I was raised up to Sidrat Al-Muntaha so I saw a magnificent light at it.”

حَدَّثَنَا أَحْمَدُ بْنُ مَنِيعٍ، حَدَّثَنَا سُرَيْجُ بْنُ النُّعْمَانِ، حَدَّثَنَا الْحَكَمُ بْنُ عَبْدِ الْمَلِكِ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ " بَيْنَا أَنَا أَسِيرُ فِي الْجَنَّةِ إِذْ عَرَضَ لِي نَهْرٌ حَافَّتَاهُ قِبَابُ اللُّؤْلُؤِ . قُلْتُ لِلْمَلَكِ مَا هَذَا قَالَ هَذَا الْكَوْثَرُ الَّذِي أَعْطَاكَهُ اللَّهُ قَالَ ثُمَّ ضَرَبَ بِيَدِهِ إِلَى طِينَةٍ فَاسْتَخْرَجَ مِسْكًا ثُمَّ رُفِعَتْ لِي سِدْرَةُ الْمُنْتَهَى فَرَأَيْتُ عِنْدَهَا نُورًا عَظِيمًا " .

قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ . وَقَدْ رُوِيَ مِنْ غَيْرِ وَجْهٍ عَنْ أَنَسٍ .