Nasai

1380. Commentary: The purpose of the chapter is clear: the ritual bath (ghusl) for Jumu‘ah was due to the aforementioned necessity. This is the second argument of the majority (jumhur): if such a situation does not exist, then the ritual bath is not obligatory, because people used to come from several miles away. Due to work and labor, dirt would accumulate on the body, they would sweat on the way, their clothes were made of wool and similar materials, and when there was a crowd, an unpleasant odor would spread. Therefore, the command for the ritual bath was given. However, in light of the evidences, this argument too is not decisive in the matter under discussion; the removal of the cause and reason does not necessarily entail the removal of the original ruling, nor is this a general, universal principle. Although this was the reason in the beginning, later the Messenger of Allah (sallallahu alayhi wa sallam) maintained them upon it and, by issuing further rulings regarding it, made it obligatory. Even in the initial three circuits (shawt) of the arrival circumambulation (tawaf al-qudum), the practice of brisk walking (raml) was originally due to a specific cause and reason, but despite the removal of that cause, this act is still legislated and required. And Allah knows best. For further details, see the introduction to the Book of Ritual Bath (Kitab al-Ghusl).