According to Sahih Hadeeth "Al Kauther" has different distances. Which one is the correct distance?
Volume 8, Book 76, Number 579: Narrated Ibn 'Umar: The Prophet said, "There will be a tank (Lake-Fount) in front of you as large as the distance between Jarba and Adhruh (two towns in Sham)."
Volume 8, Book 76, 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."
Volume 8, Book 76, Number 591: Narrated Haritha bin Wahb: I heard the Prophet mentioning the Lake-Fount (Al-Kauthar), saying, "(The width of the Lake- Fount) is equal to the distance between Medina and Sana' (capital of Yemen)." Haritha said that he heard the Prophet saying that his Lake-Fount would be as large as the distance between Sana' and Medina. Al-Mustaurid said to Haritha, "Didn't you hear him talking about the vessels?" He said, "No." Al-Mustaurid said, "The vessels are seen in it as (numberless as) the stars."
Which is the most authentic understanding of this distance?