It (Kauthar) is a canal which my Lord the Exalted and the Glorious has promised me in Paradise. There is a tank over it, but he made no mention of the tumblers like the number of the stars.
سَمِعْتُ أَنَسَ بْنَ مَالِكٍ يَقُولُ أَغْفَى رَسُولُ اللَّهِ ﷺ إِغْفَاءَةً بِنَحْوِ حَدِيثِ ابْنِ مُسْهِرٍ غَيْرَ أَنَّهُ قَالَ نَهْرٌ وَعَدَنِيهِ رَبِّي ﷻ فِي الْجَنَّةِ عَلَيْهِ حَوْضٌ وَلَمْ يَذْكُرْ آنِيَتُهُ عَدَدُ النُّجُومِ