The beliefs of some grave worshippers

Q 2: I was told that in Algeria, there are people known for their holding graves in veneration. They adopt false beliefs with regard to graves like performing Tawaf (circumambulation) around them three times in their cars thinking this will avert any harm from the passengers. Also, a man among them recites an invocation on the stone placed under the dead person's head saying, 'You so-and-so when asked the following questions...' - then, he mentions the questions and adds, 'If asked these questions, answer them in the following manner and do not lose answer lest you should be one of the losers. If you answer, I guarantee Paradise for you and you will be rightly guided etc.What is the ruling on these deeds? Is it permissible to pray behind them or deal with them when necessary?

A: Their deeds which you have mentioned are Bid`ahs (innovations in religion) (Part No. 3; Page No. 102) and their circumambulating the grave is an abominable act and Shirk (associating others with Allah in His Divinity or worship).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.