(26) باب فِي الْحَوْضِ
Narrated Anas ibn Malik:
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.
Reference: Sunan Abi Dawud 4748
In-book reference: Book 42, Hadith 153
English translation: Book 41, Hadith 4730