question #2 Sahih al-Bukhari 3274, Book 59, Hadith 83 : Why is it important to prevent someone from passing in front of a person during prayer?

The Prophet (ﷺ) said, “If while you are praying, somebody intends to pass in front of you, prevent him; and should he insist, prevent him again; and if he insists again, fight with him (i.e. prevent him violently e.g. pushing him violently), because such a person is (like) a devil.”