Saying Salam While Passing Through Non-Muslims Graveyard
Offering salam is a prayer in its nature therefore we can say as-salamu-alaikum ya ahl al-kubur before the graves of all the people irrespective of religion except for the graves of known perpetrators of polytheism and known perpetrators of Kufr . For such people, Ghamidi Sahab suggests that we cannot do general prayer, however, we can do the prayer mentioned in Quran 5:118 . ( For details : Discussion 70183 ).