Our Shaykh Saalih Al Fawzaan mentioned that one of the greatest trial upon this ummah is the fitnah of grave worship. It is from the plots of shaitaan upon the people that they make vows by these graves, seek blessings from it, sacrifice (slaughter) for it and seek help from its inhabitants.
He mentioned that the visiting of these graves brings great benefit to those visiting and to those who are buried in them, and that is only if this visit is a legislated (permissible) visit. However if it is the visiting of these graves is not from that which is legislated (permissible), then it can be harmful to the visitors as well as its inhabitants.
Source: Class notes …… Igaathatul Lahfaan min Masaayid Ash Shaitaan (Ibn Qayyim AL Jawziyyah)
Class Date: 24/1/16
Notes compiled and translated by Abuabdilmaalik Abdulhaqq Ibn Islaam.