I am not even sure if it's really called "Buried"
it starts like this:
dark voice:
pst ... pst ... ey yo ... are you afraid to die? or do you wanna live forever? tell me ... which one?
2pac starts rapping:
they wanna burry me im worried
i'm loosing my mind look down the barrel of my nine
and my vision's blurry .........
EDIT:
shame on me^^ the song uses the verses of "Only Fear Of Death"!