Among the harms of the mixing of Muslim graves with those of disbelievers in the lands of disbelievers is the non-prescription of visiting graves, greeting them, and making du'a over the graves of disbelievers

The Shaykh : And among the results of this separation are legal rulings that many Muslims today may not be aware of, especially since most of them have become like foreigners in their attitude toward death and the dead, and toward everything that reminds one of death or the dead. It is very, very rare to see a Muslim today who intends to visit graves. In fact, it is very rare to find a Muslim who, if he happens to pass by a cemetery of Muslims, greets them with the prescribed greeting: . It is very rare for anyone to do this. So, among the effects of mixing the graves of Muslims with those of polytheists is that you are unable to recite this formula, because these are not the graves of Muslims. Nor are you in a position to recite the specific formula for the graves of disbelievers, as mentioned in the authentic hadiths: . Therefore, if a Muslim passes by the graves of Muslims, he greets them with this greeting that you just heard. But if he passes by the graves of Jews and Christians, the Sunnah is to say: "I give you the glad tidings of the Fire." If Muslims are buried in the graves of polytheists, he is unable to say this greeting, nor that warning which he said: . Therefore, there is no escape from these miseries and these sins except by fleeing to the lands of Islam.