When anyone of you prays towards an object that acts as a barrier between him and the people and then someone tries to pass in front of him, he should push him away; and if he insists, he should fight him, for indeed he is a devil. [Al-Bukhari]

"عن أبي سعيد الْخُدْرِيِّ -رضي الله عنه- مرفوعًا: (إذا صلَّى أحدكم إلى شيء يَسْتُرُهُ من الناس، فأراد أحد أن يَجْتَازَ بين يديه فَلْيَدْفَعْهُ، فإن أبى فَلْيُقَاتِلْهُ؛ فإنما هو شيطان). [صحيح.] - [متفق عليه.]"