question #1 Sahih Muslim 505a, Book 4, Hadith 290 : What measures should a person take to prevent others from passing in front of them during prayer?

When any one of you prays he should not let anyone pass in front of him (if there is no sutra), and should try to turn him away as far as possible, but if he refuses to go, he should turn him away forcibly for he is a devil.