In this world you have three companions:
one is faithful, the others are treacherous.
The latter are friends and possessions;
the faithful one is excellence in deeds.
Your wealth won't come with you out of your palace;
your friend will come, but only as far as the grave.
When the day of doom comes to meet you,
your friend will say, "I've come this far, but no farther.
I will stand a while at your grave."
Your deeds alone are faithful: make them your refuge,
for they alone will accompany you into the depths of the tomb.
Mathnawi of Maulana Jalal al-Din al-Rumi