Muslim

Hadith Commentary: Benefits and Issues: The position of Allamah Diya al-Din al-Maqdisi is that a word has been omitted here. The narration of Abu Hurairah radi Allahu anhu is:
‘Its width is like the distance between you and Jarba’ and Adhrah.’
Its width, for you—meaning the people of Madinah—is equal to the distance between Jarba’ and Adhrah.
Therefore, in the hadith it would be:
kama bayna maqami wa bayna Jarba’ wa Adhrah:
‘As is the distance between my standing place and between Jarba’ and Adhrah.’
And in the narration of Sunan al-Daraqutni, it is:
ma bayna al-Madinah wa Jarba’ wa Adhrah,
(‘between Madinah and Jarba’ and Adhrah’)
(Fath al-Bari, vol. 11, p. 472, Maktabat Dar al-Ma’rifah)

Hadith Footnote:
Jarba and Azraja are two villages in the land of Sham (Greater Syria) between which there is a distance of three days’ journey.
In one hadith it is mentioned that my reservoir (hawd) is the distance of a month’s journey.
In another hadith it is stated that it is as far as the distance between Aylah and Sana’a.
In a third hadith it is mentioned that it is as far as the distance between Madinah and Sana’a.
In a fourth hadith it is stated that it is as far as the distance from Aylah to Aden.
In a fifth hadith it is mentioned that it is as far as the distance from Aylah to Juhfah.
All of these were said by the Prophet (sallallahu alayhi wa sallam) approximately to make it understandable for the people, mentioning those locations which they recognized.
It is possible that in some narrations the length is mentioned, and in others the width.
Qastallani said that all these locations are approximately at the same distance, that is, about half a month’s journey or slightly more.

Hadith Commentary:
(1)
Jarba’ and Adhrah are two villages in the region of al-Sham, between which there is a distance of three days’ travel.
In one hadith, it is mentioned that my reservoir (hawd) is a month’s journey; in another hadith, it is as much as the distance between Aylah and Sana’a; in a third hadith, it is as much as the distance between Madinah and Sana’a; in a fourth hadith, it is as much as the distance from Aylah to ‘Adan; in a fifth hadith, it is as much as the distance from Aylah to Juhfah.
The Messenger of Allah (sallallahu alayhi wa sallam) mentioned these distances in order to make it understandable for the people.
He (sallallahu alayhi wa sallam) described those locations which the people were familiar with.
(2)
It is possible that in some hadiths the length of the reservoir is mentioned, and in others its width.
All these locations are approximately at the same distance, that is, about half a month’s journey or a little more or less than that. Furthermore, the distance can also vary depending on whether the mount is fast or slow.
(Fath al-Bari: 11/574)
Some people, in view of these differences, have denied the very existence of the Hawd al-Kawthar, even though there are so many authentic hadiths on this subject that they reach the level of tawatur (mass transmission).
And Allah knows best.