Will preventing someone from walking in front of one while performing salaah be considered amal-e-katheer?
Q: It is written in Behishti Gohar that it is allowed to prevent a person from crossing in front of him while he is praying. However, if 'عمل کثیر' happens, then the prayer will become fasid.
What will be considered عمل کثیر ? What should the musalli do to prevent the person from crossing him?