وَعَنْ أَبِي سَعِيدٍ اَلْخُدْرِيِّ رضى الله عنه
قَالَ: قَالَ رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ -«إِذَا صَلَّى أَحَدُكُمْ إِلَى شَيْءٍ يَسْتُرُهُ مِنْ اَلنَّاسِ، فَأَرَادَ أَحَدٌ أَنْ يَجْتَازَ بَيْنَ يَدَيْهِ فَلْيَدْفَعْهُ، فَإِنْ أَبَى فَلْيُقَاتِلْهُ، فَإِنَّمَا هُوَ شَيْطَانٌ» مُتَّفَقٌ عَلَيْهِ. 11 صحيح
The Messenger of Allah (sallallahu alayhi wa sallam) said: “If one of you prays towards an object separating him from the people and someone tries to pass (between him and the object) in front of him, let him turn him away but if he refuses he should fight him for he is a devil.”.
Bulugh al-Maram 278, Book 2, The Book of Prayer, Hadith 99. 1 min read