Narrated by Abu Huraira (Radiyallahu `anhu) that the Prophet (Sallallaahu `alayhi wa sallam) said,

“The example of a believer is that of a fresh tender plant; from whatever direction the wind comes, it bends it, but when the wind becomes quiet, it becomes straight again. Similarly, a believer is afflicted with calamities (but he remains patient till Allah removes his difficulties.) And an impious wicked person is like a pine tree which keeps hard and straight till Allah cuts (breaks) it down when He wishes.”

Bukhari: Book 7, Volume 70, Hadith 547