From my fabulous Yahoo Mahabharata group comes this quote. (Yama is the god of death.)
k.m.ganguly - shanti-parva- 322 -
Neither mother, nor son, nor relatives, nor dear friends even when
solicited with honours, accompany the man that dies. To the regions
of Yama one has to go oneself, unaccompanied by any one. Only those
deeds, good and bad, that one did before death accompany the man
that goes to the other world.