(1) بَابُ مَا جَاءَ فِي كَفَّارَةِ الْمَرَضِ
Narrated Abu Huraira:
Allah's Messenger (ﷺ) 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." (See Hadith No. 558, Vol. 9.)
Reference: Sahih al-Bukhari 5644
In-book reference: Book 75, Hadith 4
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 70, Hadith 547