Hadith Allowing Praying At Graveyard From People Inside The Grave
We should be very careful in attributing any saying to Prophet Muhammad (sws). There is no such saying of Prophet Muhammad (sws) in this regard. And for the sake of argument, even if this hadith is somehow presented with a strong chain of narrators in some book, it would still be rejected on the basis of its content which goes against Quran. The criteria for hadith grading is not only its chain, but also its content which should not go against Quran, Sunnah and established facts of reason and logic. Please see for details : Discussion 80858