Nasai

Hadith Commentary: Benefits and Issues: From the aforementioned narrations, it is established that the Messenger of Allah (sallallahu alayhi wa sallam) used to perform the Friday prayer early, and he did not deliver a lengthy sermon. This is because after the Friday prayer, the shadow of the walls would not have spread much, such that a person could walk comfortably in its shade. From this, it is understood that he (sallallahu alayhi wa sallam) would begin the Friday prayer before the sun had passed its zenith (zawal). And this is the position of Imam Ahmad (rahimahullah) and Imam Ishaq (rahimahullah), and by considering various narrations, it is known that he (sallallahu alayhi wa sallam) on some occasions began the Friday prayer before zawal. However, his (sallallahu alayhi wa sallam) general blessed habit was that he would begin the Friday prayer after zawal, but he would not take much time. But according to Maulana Safiur Rahman (rahimahullah), in Madinah Munawwarah, at the time of zawal, the shadow is very short, that is, even less than half a span. Therefore, if the Friday prayer is started immediately after zawal, then after the Friday prayer, the shadow of the walls is not sufficient for a person to walk in it.

Commentary:
Benefits and Issues:
By this is meant the pot
which has been oiled or coated with tar or the like.

Urdu marginal note:
See the details, Hadith: 5550.