Sayyiduna Abu Rafi' (may Allah be pleased with him) narrates: I was with the Messenger of Allah (peace and blessings be upon him) in Baqi' al-Gharqad, walking behind him, when he (peace and blessings be upon him) said: "May you not be guided, may you not be guided." Abu Rafi' (may Allah be pleased with him) said: I turned around but saw no one, so I said: O Messenger of Allah! What is the matter with me? He (peace and blessings be upon him) said: "I do not mean you; rather I mean the occupant of the grave, who is asked about me and claims that he does not know me." And it turned out to be a grave on which water had been sprinkled when its occupant was buried.
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 970