Sahih Bukhari
To make the Heart Tender (Ar-Riqaq)
Volume: 008 / Book Number: 076 / Hadith Number: 582
Narrated Anas bin Malik:
Allah's Apostle said, "The width of my Lake-Fount is equal to the distance between Aila (a town in Sham) and Sana' (the capital of Yemen) and it has as many (numerous) jugs as the number of stars of the sky."