As-salamu 'alaykum wa rahmatullah,
I pray that you are all in the best of health, physically as well as spiritually, and may Allah grant you the best from this world and the hereafter.
This topic is about the travelling distance according to the Hanafi madhhab and the conversion of the classical units of distance into what most people use these days, being the units of miles and km.
First of all, it is clear that there are three positions in the Hanafi madhhab as to the distance considered to be the travelling distance (i.e. the minimum distance one has to intend to cover, before becoming a traveller (musafir) that shortens the prayers (qasr)).
These positions are: 15 farsakhs, 18 farsakhs and 21 farsakhs, as mentioned by Imam Badr al-Din al-'Ayni in 'Umda al-Qari. Of these, the position of the travelling distance being 18 farsakh is the fatwa position, according to - among others - Imam Ibn 'Abidin al-Shami as mentioned in Radd al-Muhtar (Rahmatu Llahi ta'ala 'alayhima).
But for all this to make any sense for Muslims living in the west, who usually do not consider distances in farsakh, we must convert these distances into something we're more used to - miles and km being the most obvious choices.
Now, some people say that the travelling distance is 48 miles/77 km, and this is what - among others - the learned people on SunniPath mention, and as SP is one of the more influential and widely visited and followed Sunni academies/websites, many people follow this view.
What I would like to know is: How is this conclusion - of 48 miles/77 km - reached and by which calculations?
If anyone could present the mathematical calculations of how xx farsakhs equal 48 miles/77 km, I would very much appreciate it.
I am asking, because according to my calculations (and what my shayukh give fatwa upon), this (48 miles/77 km) position, does not go back to either of the three mentioned positions, and certainly not the fatwa position. Simply put, it is wrong. Yet, people all over are following this position.
And just to make it completely clear: I am not interested in what the correct position is (we'll get to that part later), but I am only interested in mathematical proof (calculations) that support the 48 miles/77 km position, because I want to know if there is any at all.
Jazakumu Llahu khayran,
Wa as-salamu 'alaykum wa rahmatullah