Imaam ash-Shaafi`ee (d.204H) - rahimahullaah - said:
"O my soul! It is not, except a few days of patience;
As if the extent were but a few dreams.
O my soul! Pass quickly on through this world;
And leave it, for indeed life lies ahead of it."
[Related by Ibn Rajab in Fadl `Ilmus-Salaf (p.63)]