Musnad Ahmad Hadith 21327

It is narrated from Abu Dharr (may Allah be pleased with him) that once I asked in the presence of the Messenger of Allah, "How many vessels will there be at the Pond of Kawthar?" The Noble Prophet (ﷺ) said, "By Him in Whose hand is my soul, there will be more vessels than the number of stars and planets in the sky on a dark night. They will be vessels of Paradise. Whoever drinks the water of this pond once will never feel thirsty again. Two streams of Paradise will be flowing into it. Whoever drinks its water will never feel thirsty again. Its width will be equal to its length, and its distance will be as much as from Oman to Aylah. Its water will be whiter than milk and sweeter than honey."