HAUZU ‘L-KAUSAR حوض الكوثر
A pond or river in Paradise. According to Muhammad’s sayings in the Traditions (Mishkat, book xxiii. ch. xii), it is more than a month’s journey in circumference, its waters are whiter than snow and sweeter than honey mixed with milk, and those who drink of it shall never thirst. The word kausar occurs once in the Qur’an, namely Surah cviii., which derives therefrom its title, and where its translation and meaning is doubtful. “Verily, we have given thee al-Kausar.” Al-Baizawi, the commentator, says it either means that which is good or abundant; or the pond al-Kausar which is mentioned in the Traditions.

Based on Hughes, Dictionary of Islam