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."
Reference: Sahih al-Bukhari 3274 In-book : Book 59, Hadith 83 USC-MSA web (English) : Vol. 4, Book 54, Hadith 495 (deprecated)
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