Abu Salih reported,

I will tell you what I heard from Abu Saeed and what I saw him do. He said:While I was with Abu Saeed as he was praying on Friday, facing something that screened him from the people, a young man from the tribe of Banu Abu Muayt came and tried to pass in front of him. Abu Saeed pushed him back in the chest. The young man looked around but found no way through except in front of Abu Saeed, so he tried again. This time Abu Saeed pushed him back even harder than the first time. The young man stood up and began to abuse Abu Saeed, then he pressed his way through the crowd and left.He went to Marwan and complained to him about what had happened. Then Abu Saeed also came in to see Marwan.Marwan said to him, "What is the matter between you and your nephew? He came complaining about you."Abu Saeed said, "I heard the Messenger of Allah ﷺ say, 'When one of you prays facing something that screens him from the people and someone wants to pass in front of him, let him push him back in the chest. If he refuses, let him fight him, for he is nothing but a devil.'"

Muslim 1129

Sahih

حدثنا شيبان بن فروخ حدثنا سليمان بن المغيرة حدثنا ابن هلال يعني حميدا قال بينما أنا وصاحب لي نتذاكر حديثا إذ قال

أبو صالح السمان

أنا أحدثك ما سمعت من أبي سعيد ورأيت منه قال بينما أنا مع أبي سعيد يصلي يوم الجمعة إلى شيء يستره من الناس إذ جاء رجل شاب من بني أبي معيط أراد أن يجتاز بين يديه فدفع في نحره فنظر فلم يجد مساغا إلا بين يدي أبي سعيد فعاد فدفع في نحره أشد من الدفعة الأولى فمثل قائما فنال من أبي سعيد ثم زاحم الناس فخرج فدخل على مروان فشكا إليه ما لقي قال ودخل أبو سعيد على مروان فقال له مروان ما لك ولابن أخيك جاء يشكوك فقال أبو سعيد سمعت رسول الله ﷺ يقول إذا صلى أحدكم إلى شيء يستره من الناس فأراد أحد أن يجتاز بين يديه فليدفع في نحره فإن أبى فليقاتله فإنما هو شيطان

مسلم 1129صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Prayer
Chapter
Preventing the one passing in front of the praying person
Numbering
Darussalam 1129
Muslim 1129