However, if he has a sutrah, it is not permissible to pass between him and it. He should, however, stand close to it, such that his place of prostration is beside it, lest he claim more space than he needs. There was only enough space for a sheep to pass between the place where the Prophet ﷺ prayed and the wall toward which he prayed.
The apparent meaning of the author’s words is that there is no distinction between a passer who needs to pass and one who does not. An example of one who needs to pass is where the mosque door is to the right or left of the person praying, and he wishes to cross over to the mosque door; such a person needs to pass. This is due to the general wording of the command: “…and someone wishes to pass in front of him…” (1). The Prophet ﷺ did not distinguish between a passer who needs to pass and one who does not.
Generally, a person only passes in front of one who is praying because he needs to pass. So how can we divert the indication of the hadith from what is generally the case to what is not generally the case?
The correct view, then, is that there is no distinction between one who needs to pass and one who does not. He has no right to pass in front of the person praying. The Prophet ﷺ said: “If the one who passes in front of a person praying knew what burden was upon him, standing for forty would be better for him than passing in front of him” (2)—that is, forty autumns, as in al-Bazzar’s narration: “Standing for forty autumns would be better for him…” (3).