“wasted limbs”-the author might wanted to say that when you are dead you do not need your legs or arms any more. You used to walk somewhere or to hug somebody, but it was in the past. It does not matter now.
“Rugged stones”—you had a lot of problems, you solved them. You did a lot of things in your life, sometimes it was difficult.
“hungry wolves”-after your death your relatives or friends do not respect you any more. They may say bad things about you.
“burning sun”-if the sun is so bright and you stay outside for a long time, it becomes not so pleasant and warm, as it was before
